Abraboro drill bit HSS cylindrical 8.8 mm, set of 10

Set of 10 Abraboro HSS cylindrical drill bits with an 8.8 mm cutting diameter. Each bit is made from high-speed steel (HSS) to offer improved wear resistance and thermal stability compared with carbon steel bits. The cylindrical (straight) shank design is compatible with standard chucks and provides consistent concentricity for routine metalworking, maintenance and general workshop drilling tasks.

Advantages

These Abraboro HSS drill bits deliver uniform hole sizes across the set and maintain sharpness under repeated use thanks to the HSS material. The cylindrical shank simplifies mounting in common drill chucks and reduces runout when properly secured. The bits are suitable for continuous drilling in a range of ferrous and non-ferrous metals and for mixed workshop applications where heat resistance and edge retention are required.

Suitable for

• Drilling holes in steel, cast iron and non-ferrous metals
• General maintenance and repair work in workshops
• Fabrication tasks requiring consistent 8.8 mm holes
• Use with hand drills and drill presses equipped with standard chucks

Key specifications

• Material: High-speed steel (HSS)
• Cutting diameter: 8.8 mm
• Shank type: Cylindrical (straight) shank
• Quantity: 10 pieces per set
• Typical applications: Metalworking, maintenance, fabrication

How to use

Select an appropriate drill speed for the material being worked and secure the bit in a compatible chuck, ensuring the shank is firmly clamped to minimize runout. Use cutting fluid when drilling harder metals to reduce heat buildup and extend bit life. Apply steady, moderate feed pressure and allow the bit to cut without excessive force; retract periodically to clear chips when drilling deep holes. After use, clean chips and residue from the flutes and store the bits dry to avoid corrosion.

Usage recommendations

For best results when drilling metals, start with a pilot hole if accuracy is critical, maintain appropriate spindle speed, and use cutting lubricant on harder materials. Inspect bits for wear or chipping before each use and replace when cutting performance deteriorates to maintain hole quality and safety.