Drill bit set Abraboro HSS cylindrical 4.6 mm, 10 pcs AB00010461

Abraboro HSS cylindrical drill bit set contains ten identical 4.6 mm high-speed steel (HSS) twist drills designed for metalworking. The set is intended for workshop, maintenance and metal fabrication tasks where consistent hole diameter and reliable cutting performance are required. Cylindrical shanks fit standard chucks and holders, allowing straightforward installation in hand drills and drill presses.

Advantages

The HSS material delivers good heat resistance and wear performance when drilling common ferrous and non-ferrous metals. Uniform 4.6 mm diameter across all ten bits ensures repeatable hole sizes for production runs or repair tasks. Cylindrical shanks provide stable seating in chucks and simplify bit changes, while the compact set format keeps spare bits organized for frequent use.

Suitable for

• Drilling holes in mild steel, stainless steel, aluminium and non-ferrous alloys
• Workshop and maintenance operations
• Metal fabrication and assembly tasks requiring consistent 4.6 mm holes
• Use with hand-held drills and bench drill presses

Key specifications

• Material: High-speed steel (HSS)
• Drill type: Twist drill with cylindrical shank
• Diameter: 4.6 mm
• Quantity: 10 pieces per set
• Shank: Cylindrical, compatible with standard chucks

How to use

Select an appropriate cutting speed and apply cutting fluid when drilling metals to extend tool life and maintain hole quality. Secure the workpiece and align the drill perpendicular to the surface. Clamp the chosen 4.6 mm bit in the drill chuck ensuring it is centered and tightened. Start drilling with light pressure to produce a pilot groove, then increase feed as the bit advances. Withdraw occasionally to clear chips and reapply lubricant when drilling deeper holes.

Usage recommendations

For best results when working with harder steels, use lower cutting speeds and steady coolant flow. Replace worn bits from the set to maintain hole accuracy and avoid excessive heat buildup. Store bits in a dry place and keep the shanks clean to ensure secure chuck clamping.