Filter
Your Cart

Borkoroni - Page 1

Metal drill bits for precision holes in ..
Wood drill bits for clean round holesWoo..
Plasterboard hole saws for clean and pre..
Brick core bits for precise holes in mas..
Socket bit sets for precise holes in ele..
Tile core bits for clean holes in cerami..
Concrete core bits for precision drillin..
Diamond core bit for clean and precise d..
Diamond core bit for porcelain tiles - p..
Diamond core bit for concrete - precise ..
Core bits for porcelain tiles - precise ..
Brand: Bosch Stock: In Stock
BOSCH Power Change Plus HSS-Co Core Drill Adapter, 16-152 mm The BOSCH Power-Change adapter for bi-metal core bits has a diameter ranging from 16 to 152 mm. It comes with a centering drill bit made of hardened alloy high-speed steel. Suitable for drilling wood, plastic, and metal. Hex shank. The drill bit is designed for Bosch Progressor wood and metal saws with a mounting system. The adapter has an 8.7 mm hex shank. The original adapter is made of high-quality materials and will last a long time. The HSS-Co center drill ensures a precise and accurate start to drilling. The adapter is very reliable and durable; the unique Power-Change Plus system allows you to quickly and easily change the drill bit without using a wrench. Unique keyless chuck system. Suitable for use with all corded and cordless drills. Technical specifications: Brand: BOSCH;Material: HSS-Co;Diameter: 16-152 mm;Length: 65 mm;Shank: 1/4" hex shank;Application: wood, plastic, and metal;Use: for drills;Dimensions (LxWxH): 241 x 80 x 35 mm;Weight: 0.170 kg...
26.24€
Ex Tax:21.87€
Add to Cart
Brand: Bosch Stock: In Stock
BOSCH Power Change Plus HSS-G Drill Bit Adapter for Core Bits, 16-210 mm The BOSCH Power-Change adapter for bi-metal core bits has a diameter ranging from 16 to 210 mm. It comes with a centering drill bit made of hardened alloy high-speed steel. Suitable for drilling wood, plastic, and metal. Hex shank. The drill bit is designed for Bosch Progressor wood and metal saws with a mounting system. The adapter features an 8.7 mm hex shank. The original adapter is made of high-quality materials and will last a long time. The HSS-G center drill ensures a precise and accurate start to drilling. The adapter is very reliable and durable; the unique Power-Change Plus system allows you to quickly and easily change the bit without using a wrench. Unique keyless chuck system. Suitable for use with all corded and cordless drills. Technical specifications: Brand: BOSCH;Material: HSS-G;Diameter: 16-210 mm;Length: 85 mm;Shank: 1/4" hex shank;Application: wood, plastic, and metal;Use: for drills;Dimensions (LxWxH): 241 x 80 x 35 mm;Weight: 0.180 kg...
26.29€
Ex Tax:21.91€
Add to Cart
Brand: Bosch Stock: In Stock
Adapter for core bits with shank and drill bit, BOSCH Power Change Plus, SDS, Plus HSS-G, 16-210 mm The BOSCH Power-Change adapter for bi-metal core bits has a diameter ranging from 16 to 210 mm. It comes with a centering drill bit made of hardened alloy high-speed steel. Suitable for drilling wood, plastic, and metal. Hex shank. The drill bit is designed for Bosch Progressor wood and metal saws with a mounting system. The adapter features an 8.7 mm hex shank. The original adapter is made of high-quality materials and will last a long time. The HSS-G center drill ensures a precise and accurate start to drilling. The adapter is very reliable and durable; the unique Power-Change Plus system allows you to quickly and easily change the drill bit without using a wrench. Unique keyless chuck system. Suitable for use with all corded and cordless drills. Technical specifications: Brand: BOSCH;Material: HSS-G;Diameter: 16-210 mm;Length: 85 mm;Shank: 1/4" hex shank;Application: wood, plastic, and metal;Use: for drills;Dimensions (LxWxH): 263 x 80 x 35 mm;Weight: 0.200 kg...
31.93€
Ex Tax:26.61€
Add to Cart
Stock: In Stock
Rotabroach M2AL Raptor Annular Cutter 16 x 25 mm, RAP160 Rotabroach RAP160 is a professional annular cutter from the M2AL Raptor range, 16 mm in diameter with a 25 mm depth of cut. The shank is a 19.05 mm (3/4 in) Weldon with two flats - the standard accepted by practically every magnetic drill on the market. M2AL material Raptor cutters are made from M2AL - high speed steel with an aluminium addition, heat treated at high temperature. The result is greater cutting-edge hardness, a higher cutting speed and longer tool life than an ordinary HSS cutter of the same class. Tooth geometry The Raptor range uses a tooth geometry of its own, developed by Rotabroach and different from that of generic cutters. It spreads the load across more cutting edges, which makes the cut smoother, the chip more controlled and the finished hole more accurate with a cleaner wall. Materials The cutter is intended for mild and structural steel with a tensile strength up to 900 N/mm². That covers the sections, beams, plate and sheet handled in steel fabrication, bridge building, shipbuilding and general engineering. Pilot pin and lubrication The pilot pin is not included - it is ordered separately, and Rotabroach recommends always working with one. The pin centres the start of the cut and ejects the slug at the end of the stroke. Generous lubrication with cutting paste or emulsion multiplies the life of the cutter. Compatibility The 19.05 mm Weldon shank makes the cutter compatible with magnetic drills from Rotabroach, ALFRA, BDS, EUROBOOR, HOUGEN, RUKO, UNIBOR, JEI, Evolution, Powerbor and G&J Hall, and with any other machine using the same holder. Technical specifications ManufacturerRotabroach RangeM2AL Raptor Model / articleRAP160 TypeAnnular cutter Diameter16 mm Depth of cut25 mm MaterialM2AL - high speed steel with aluminium, heat treated Shank19.05 mm (3/4 in) Weldon, two flats Max. tensile strength of workpieceup to 900 N/mm² Suitable materialsMild and structural steel Pilot pinNot included - ordered separately Pack quantity1 piece Questions and Answers What hole does this cutter make? A 16 mm hole up to 25 mm deep. The 25 mm depth is the standard of the RAP range - thicker material is handled by the RAPL variant of the same range, which cuts to 50 mm. What is the shank, and will it fit my machine? The shank is a 19.05 mm (3/4 in) Weldon with two flats. This is the most widespread magnetic drill holder, so the cutter fits machines from Rotabroach, ALFRA, BDS, EUROBOOR, HOUGEN, RUKO, UNIBOR, JEI and others using the same holder. Which materials is it intended for? Mild and structural steel with a tensile strength up to 900 N/mm². It is not intended for hardened steels above that limit - those call for a cutter with tungsten carbide tips. Is the pilot pin included? No. The pin is ordered separately. Rotabroach recommends always using the cutter with a pilot pin - it centres the start of the cut and ejects the slug once the cutter breaks through. Why is it better than a bi-metal hole saw? An annular cutter removes only a ring of material rather than grinding away the whole disc. It therefore cuts several times faster, loads the machine less and leaves a clean-walled hole of accurate diameter, ready for a bolt or a thread. Is lubrication necessary? Yes, always. Cutting paste or emulsion carries heat and swarf away from the teeth. Running dry is the most common cause of premature dulling and broken teeth on annular cutters. What is the difference between M2AL and ordinary HSS? M2AL is high speed steel with an aluminium addition, heat treated at a higher temperature. It gives greater cutting-edge hardness, which allows a higher cutting speed and extends tool life. ..
25.00€
Ex Tax:20.83€
Add to Cart
Stock: In Stock
Rotabroach M2AL Raptor Annular Cutter 19 x 25 mm, RAP190 Rotabroach RAP190 is an annular cutter from the M2AL Raptor range, 19 mm in diameter with a 25 mm cutting depth. It carries a 19.05 mm (3/4 inch) Weldon shank with two flats - the standard that virtually every magnetic drill on the market accepts. Nineteen millimetres is one of the most used sizes in structural steel, because it clears an M16 bolt with normal assembly tolerance. Why an annular cutter rather than a twist drill An annular cutter removes only a ring of material and ejects the core in one piece instead of grinding the whole hole into swarf. At 19 mm in structural steel that means several times less cutting time, noticeably less load on the machine, and a hole with an accurate diameter and a clean wall, ready for a bolt or for tapping. M2AL material Raptor cutters are made from M2AL - high speed steel with an aluminium addition, heat-treated at high temperature. The addition raises the hardness of the cutting edges, which allows a higher cutting speed and extends tool life compared with a plain HSS cutter of the same class. Tooth geometry The Raptor range uses a tooth geometry developed by Rotabroach. It spreads the load across more cutting edges, so the cut runs more calmly, the chip is carried away in a controlled way and the wall of the hole comes out smoother. The cutter is rated for steel with a tensile strength up to 900 N/mm², which covers the sections, beams, sheet and plate used in structural steelwork, bridge building and general engineering. Pilot pin and lubrication The pilot pin is not included. Cutters with a 25 mm cutting depth take the short SRA25 pilot, which covers the whole 13-52 mm diameter range. The pilot centres the start of the cut and pushes the slug out at the end of the stroke. Generous lubrication with cutting paste or emulsion multiplies the life of the cutter - running dry is the most common cause of a broken tooth. Technical specifications ManufacturerRotabroach (G&J Hall Tools) RangeM2AL Raptor Model / articleRAP190 TypeAnnular cutter Diameter19 mm Cutting depth25 mm MaterialM2AL - high speed steel with aluminium, heat-treated Shank19.05 mm (3/4 inch) Weldon, two flats Max. tensile strength of materialup to 900 N/mm² Suitable materialsStructural and mild steel, aluminium, copper, brass Pilot pinNot included - SRA25 for 25 mm depth Pack quantity1 piece Questions and Answers What hole does this cutter make? A 19 mm hole up to 25 mm deep. The 25 mm depth is the standard for the RAP range - for thicker material the RAPL version of the same range cuts to 50 mm. What shank does it have and will it fit my machine? A 19.05 mm (3/4 inch) Weldon shank with two flats. This is the most widespread holder for magnetic drills, so the cutter fits machines from Rotabroach, ALFRA, BDS, EUROBOOR, HOUGEN, RUKO, UNIBOR, JEI and any other with the same holder. Which pilot pin does it need, and is one included? The pilot is not included. Cutters with a 25 mm cutting depth use the short SRA25 pilot, which serves diameters from 13 to 52 mm. Rotabroach recommends always cutting with a pilot fitted - it centres the start of the cut and ejects the slug at the end. What material is it rated for? Structural and mild steel with a tensile strength up to 900 N/mm², plus aluminium, copper and brass. It is not intended for hardened steels above that limit - those call for a cutter with carbide tips. Can I use it in an ordinary drill? No. The cutter needs a machine with a Weldon holder and rigid guidance - in practice a magnetic drill or a pillar drill with a suitable chuck. A hand-held drill cannot guide it accurately enough and the teeth break. Does it need lubrication while cutting? Yes, always. Cutting paste or emulsion carries heat and swarf away from the teeth. Running dry is the most common cause of premature dulling and of broken teeth on annular cutters. What is the difference between M2AL and plain HSS? M2AL is high speed steel with an aluminium addition, heat-treated at a higher temperature. It gives greater hardness at the cutting edges, which allows a higher cutting speed and extends the life of the tool. ..
29.00€
Ex Tax:24.17€
Add to Cart
Brand: Dewalt Stock: In Stock
DeWALT DT90301 Bimetal Metal Drill Bit, 22 x 37 mm The DeWALT drill bit is ideal for drilling holes in steel, stainless steel, brass, copper, zinc, tin, aluminum, wood, plastic, and other materials. The hardened ToughCoat layer reduces surface friction and heat, thereby extending the life of the drill bit. The specially designed tooth geometry ensures a clean, burr-free cut. The quick-release mandrel prevents the drill bit from jamming on the mandrel and allows for easy removal...
11.76€
Ex Tax:9.80€
Add to Cart
Brand: Dewalt Stock: In Stock
DeWALT DT90303 Bimetal Metal Core Drill Bit, 25 x 37 mm The DeWALT core drill bit is ideal for drilling holes in steel, stainless steel, brass, copper, zinc, tin, aluminum, wood, plastic, and other materials. The hardened ToughCoat layer reduces surface friction and heat, thereby extending the life of the bit. The specially designed tooth geometry ensures a clean, burr-free cut. The quick-release mandrel prevents the drill bit from jamming on the mandrel and allows for easy removal...
-14%
14.50€ 16.80€
Ex Tax:12.08€
Add to Cart
Brand: Dewalt Stock: In Stock
DeWALT DT90307 Bimetal Metal Core Drill Bit, 32 x 37 mm The DeWALT core drill bit is ideal for drilling holes in steel, stainless steel, brass, copper, zinc, tin, aluminum, wood, plastic, and other materials. The hardened ToughCoat layer reduces surface friction and heat, thereby extending the life of the bit. The specially designed tooth geometry ensures a clean, burr-free cut. The quick-release mandrel prevents the drill bit from jamming on the mandrel and allows for easy removal...
13.05€
Ex Tax:10.88€
Add to Cart
Brand: Dewalt Stock: In Stock
DeWALT DT90309 Bimetal Metal Core Drill Bit, 35 x 37 mm The DeWALT core drill bit is ideal for drilling holes in steel, stainless steel, brass, copper, zinc, tin, aluminum, wood, plastic, and other materials. The hardened ToughCoat layer reduces surface friction and heat, thereby extending the life of the drill bit. The specially designed tooth geometry ensures a clean, burr-free cut. The quick-release mandrel prevents the drill bit from jamming on the mandrel and allows for easy removal...
13.05€
Ex Tax:10.88€
Add to Cart
Brand: Dewalt Stock: In Stock
DeWALT DT90309 Bimetal Metal Core Drill Bit, 67 x 37 mm The DeWALT core drill bit is ideal for drilling holes in steel, stainless steel, brass, copper, zinc, tin, aluminum, wood, plastic, and other materials. The hardened ToughCoat layer reduces surface friction and heat, thereby extending the life of the bit. The specially designed tooth geometry ensures a clean, burr-free cut. The quick-release mandrel prevents the drill bit from jamming on the mandrel and allows for easy removal...
15.96€
Ex Tax:13.30€
Add to Cart
Brand: Makita Stock: In Stock
Makita D-17108 Drill BitDescription: The Makita D-17108 bi-metal hole saw is ideal for cutting 68 mm diameter holes in various materials such as metal, steel, aluminum, copper, brass, plastic, and wood. It offers excellent durability and performance thanks to its two-material construction. For optimal results, the recommended drilling speeds vary depending on the material. When working in wood, the recommended speed is approximately 1 ,800 rpm ; in steel, 650 rpm ; in aluminum, 190 rpm ; and in metal, 130 rpm. This allows you to adjust the speed of your tool to achieve the best results depending on the material you are working with. The drill bit has a PG 9 shank, which ensures a firm and secure connection to your tool. Technical specifications:Application: bi-metal - for wood, plastic, drywall, black, colored, and stainless steelHole saw diameter: 68 mmHole saw length: 43 mmRecommended speed for drilling in wood: 1800 rpmRecommended speed for drilling in steel: 65 rpmRecommended speed for drilling in aluminum: 190 rpmRecommended speed for drilling in metal: 130 rpmConnection size: PG 9..
-19%
9.50€ 11.66€
Ex Tax:7.92€
Add to Cart
Brand: Bosch Stock: In Stock
BOSCH Progressor NEW Bimetal Core Drill Bit, 68 x 44 mm The BOSCH 2608594228 bimetal core drill bit for wood and metal features enhanced wear resistance and is designed for highly efficient and precise drilling of holes in wood, steel, aluminum, cast iron, bronze, and other materials. This is a bimetal cutting disc with 8% cobalt content in the alloy for twice the strength. Enhanced tooth geometry with increased pitch progression for fast, smooth drilling and nearly instant chip removal. The wood and metal drill bit is excellent for universal use and excels with a wide variety of materials. The high-speed steel in the core of the bit significantly reduces the risk of tooth breakage and provides greater heat resistance. The new Bosch Power-Change Plus adapter allows you to change the bit in just one second. Suitable for all corded and cordless drills. Technical specifications:Brand: BOSCH;Diameter: 68 mm;Maximum cutting depth: 44 mm;Material: HSS Co - bi-metal (BiM);Application: metal, wood, stainless steel, plastic;Quantity per package: 1 pc.Weight: 0.260 kg..
26.46€
Ex Tax:22.05€
Add to Cart
Stock: In Stock
Bosch 2609256D01 Wood Drill BitDescription: The Bosch 2609256D01 hole saw is a high-quality tool designed for drilling holes in wooden and drywall ceilings. With it, you can easily create holes for spotlights and recessed lights. It features a 1/4" hex shank that ensures a secure grip during use. With a diameter of 25 mm, the drill bit features a black anti-corrosion coating that ensures a long service life. Technical Specifications:Brand: BOSCHDiameter: 25 mmShank: 1/4"Application: Wood, drywallQuantity per package: 1 pcDimensions: 15 x 15 x 10 cm..
3.32€
Ex Tax:2.77€
Add to Cart
Brand: Bosch Stock: In Stock
Bosch 2609256D03 Wood Drill BitDescription: The Bosch 2609256D03 hole saw is a high-quality tool designed for drilling holes in wood and drywall ceilings. With it, you can easily create holes for spotlights and recessed lights. It features a 1/4" hex shank that ensures a secure grip during use. With a diameter of 38 mm, the drill bit features a black anti-corrosion coating that ensures a long service life. Technical Specifications:Brand: BOSCHDiameter: 38 mmShank: 1/4"Application: Wood, drywallQuantity per package: 1 pc..
4.17€
Ex Tax:3.48€
Add to Cart
Brand: Bosch Stock: In Stock
Bosch 2609256D04 Wood Drill BitDescription: The Bosch 2609256D04 hole saw is a high-quality tool designed for drilling holes in wooden and drywall ceilings. With it, you can easily create holes for spotlights and recessed lights. It features a 1/4" hex shank that ensures a secure grip during use. With a diameter of 48 mm, the hole saw features a black anti-corrosion coating that ensures a long service life. Technical Specifications:Brand: BOSCHDiameter: 48 mmShank: 1/4"Application: Wood, drywallQuantity per package: 1 pc..
4.40€
Ex Tax:3.67€
Add to Cart
Brand: Bosch Stock: In Stock
Bosch 2608900419 Carbide Core DrillDescription: The Bosch Endurance drill bit is a high-quality tool for drilling in various materials. It is made of specially developed fine-grain carbide teeth, which ensure a long service life. The carbide teeth are laser-welded and ground six times, providing high reliability in demanding conditions. It features a patented design that provides up to 50 times longer life. Removing stuck debris is extremely easy. It provides a 60 mm hole, making it ideal for drilling holes for cables and outlets, lamp holes, and more. Technical specifications:Brand: BOSCH;Diameter: 20 mm;Maximum cutting depth: 60 mm;Applications: Wood, metal, stainless steel, brick, tile, plastic;Quantity per package: 1 pc...
25.56€
Ex Tax:21.30€
Add to Cart
Brand: Bosch Stock: In Stock
Bosch 2608900420 Carbide Drill BitDescription: The Bosch Endurance drill bit is a high-quality tool for drilling in various materials. It is made of specially developed fine-grain carbide teeth, which ensure a long service life. The carbide teeth are laser-welded and ground six times, providing high reliability in demanding conditions. It features a patented design that provides up to 50 times longer service life. Removing stuck debris is extremely easy. It provides a 60 mm hole, making it ideal for drilling holes for cables and outlets, lamp holes, and more. Technical specifications:Brand: BOSCH;Diameter: 22 mm;Maximum cutting depth: 60 mm;Applications: Wood, metal, stainless steel, brick, tile, plastic;Quantity per package: 1 pc...
26.77€
Ex Tax:22.31€
Add to Cart
Brand: Bosch Stock: In Stock
Bosch 2608900421 Carbide Drill BitDescription: The Bosch Endurance drill bit is a high-quality tool for drilling in various materials. It is made of specially developed fine-grain carbide teeth, which ensure a long service life. The carbide teeth are laser-welded and ground six times, providing high reliability in demanding conditions. It features a patented design that ensures up to 50 times longer life. Removing stuck debris is extremely easy. It provides a 60 mm hole, making it ideal for drilling holes for cables and outlets, lamp holes, and more. Technical specifications:Brand: BOSCH;Diameter: 25 mm;Maximum cutting depth: 60 mm;Applications: Wood, metal, stainless steel, brick, tile, plastic;Quantity per package: 1 pc...
26.77€
Ex Tax:22.31€
Add to Cart
Brand: Bosch Stock: In Stock
Bosch 2608900422 Carbide Drill BitDescription: The Bosch Endurance drill bit is a high-quality tool for drilling in various materials. It is made of specially developed fine-grain carbide teeth, which ensure a long service life. The carbide teeth are laser-welded and ground six times, providing high reliability in demanding conditions. It features a patented design that ensures up to 50 times longer life. Removing stuck debris is extremely easy. It provides a 60 mm hole, making it ideal for drilling holes for cables and outlets, lamp holes, and more. Technical specifications:Brand: BOSCH;Diameter: 32 mm;Maximum cutting depth: 60 mm;Applications: Wood, metal, stainless steel, brick, tile, plastic;Quantity per package: 1 pc...
29.14€
Ex Tax:24.28€
Add to Cart
Brand: Bosch Stock: In Stock
Bosch 2608900423 Carbide Drill BitDescription: The Bosch Endurance drill bit is a high-quality tool for drilling in various materials. It is made of specially developed fine-grain carbide teeth, which ensure a long service life. The carbide teeth are laser-welded and ground six times, providing high reliability in demanding conditions. It features a patented design that provides up to 50 times longer service life. Removing stuck debris is extremely easy. It provides a 60 mm hole, making it ideal for drilling holes for cables and outlets, lamp holes, and more. Technical specifications:Brand: BOSCH;Diameter: 35 mm;Maximum cutting depth: 60 mm;Applications: Wood, metal, stainless steel, brick, tile, plastic;Quantity per package: 1 pc...
29.14€
Ex Tax:24.28€
Add to Cart
Showing 1 to 20 of 230 (12 Pages)
Borkoroni

Borkoroni

Core Drill Bits - Power and Precision for Drilling Large Holes

Core bits are specialized tools for drilling large holes in various materials such as concrete, masonry, metal, wood, tiles, and other hard surfaces. They are indispensable in construction, electrical installations, plumbing, furniture manufacturing, and a range of other industrial and repair activities. Thanks to their durability and efficiency, core bits enable fast, precise, and clean drilling of holes of various diameters.

In the "Core Bits" category, you will find a wide range of products designed for professional and semi-professional use, tailored to specific materials and applications.

What is a core bit?

A core drill is a cylindrical drilling tool with cutting teeth around the periphery, used to create wide and precise holes. It works in combination with an electric or cordless drill, a hammer drill, or a specialized diamond drilling machine.


What types of core bits do we offer?

  • Core bits for concrete and masonry: With carbide or diamond teeth, suitable for drilling into hard building materials.

  • Core bits for metal: Made of high-alloy steel or with carbide inserts for precise drilling in steel, aluminum, and other metals.

  • Core bits for wood: Lightweight and fast, ideal for drilling holes in wooden structures and furniture.

  • Diamond core bits: For dry or wet drilling in granite, marble, tiles, and other extremely hard materials.

  • Universal core bits: For working with various materials without the need to change tools.


Key features of high-quality hole saws

  • High wear resistance: Made from high-quality materials for a long service life.

  • Precise cutting edges: For clean, smooth, and precise holes.

  • Resistance to high temperatures and loads: For prolonged and intensive use.

  • Compatibility with various machines: Via adapters or specific chucks (SDS-plus, SDS-max, etc.).

  • Optimized design: For faster drilling and easy removal of material from the hole.


Advantages of using high-quality core bits

  • They save time and effort when drilling large and precise holes;

  • Ensure cleaner and more precise cutting with minimal vibration;

  • Reduce the risk of damage to the material being cut;

  • They are suitable for heavy-duty construction and installation conditions;

  • Ensure long-lasting performance without frequent replacement.


How to choose the right core bit?

When choosing, consider:

  • The material you will be drilling into (concrete, metal, wood, ceramic, etc.);

  • The diameter of the required hole;

  • The drilling depth;

  • Compatibility with the machine you will be using;

  • Special requirements such as dry or wet drilling.


Why choose drill bits from us?

In our online store, you will find:

  • High-quality core bits from proven manufacturers;

  • Models for various materials and applications;

  • Competitive prices and attractive promotions;

  • Fast delivery and professional advice to help you make the right choice.


Ensure fast, precise, and reliable drilling for every task-choose core bits from our selection and work with confidence and excellent results!

Product Filter