Drill bit Abraboro HSS-GS 9.8 mm x 133 mm working length 87 mm, pack of 10

Abraboro HSS-GS 9.8 mm x 133 mm (working length 87 mm) is a high-speed steel twist drill designed for precision holemaking in steel and non-ferrous metals. The set contains ten identical drill bits manufactured from HSS-GS material, offering wear resistance and rigidity required for general metalworking tasks. With a nominal diameter of 9.8 mm and a compact overall length, these drills are intended for use in hand-held and machine-mounted drilling operations where consistent hole diameter and surface finish are important.

Advantages

These Abraboro HSS-GS drill bits provide good hardness and thermal stability typical of high-speed steel, enabling reliable performance during moderate-speed drilling of metallic materials. The twist geometry and ground cutting edges deliver accurate centering and predictable chip evacuation for cleaner holes. Supplied in a pack of ten, the set offers value for repeated workshop and maintenance use, reducing downtime caused by dull or damaged bits.

Suitable for

• Drilling through mild and alloy steels
• Creating holes in non-ferrous metals such as aluminium and copper
• Workshop production and small-batch fabrication
• Maintenance, repair and assembly tasks requiring consistent hole size
• Use in drill presses, pillar drills and compatible hand-held drills

Key specifications

• Material: High-speed steel (HSS-GS)
• Nominal diameter: 9.8 mm
• Overall length: 133 mm
• Working length (flute length): 87 mm
• Type: Twist drill (straight shank)
• Package quantity: 10 pieces

How to use

Select an appropriate drill press or hand-held drill with a compatible chuck that securely holds a 9.8 mm straight shank. Mark and center-punch the drilling location to ensure accurate start. Use suitable cutting speeds and feed rates for the workpiece material, and apply cutting fluid when drilling steel to extend tool life and improve surface finish. Maintain steady pressure without forcing the drill; clear chips periodically to avoid clogging and overheating. Replace or resharpen bits when wear or chipping affects hole accuracy.

Usage recommendations

For best results, use progressive pecking on deep holes and moderate spindle speeds for stainless and harder steels. Store the drill bits in a dry container to prevent corrosion and inspect cutting edges before use to ensure safe, accurate drilling.