Abraboro drill bit for metal HSS cylindrical 12 mm set of 5 (AB44012000)

Abraboro cylindrical HSS drill bit set, 12 mm diameter, five pieces. Designed for drilling various metals, this set provides uniform, hardened high-speed steel bits with cylindrical shanks suitable for standard chucks. The set AB44012000 is intended for repeated metalworking tasks in workshops, maintenance operations and light industrial production where multiple identical bits reduce downtime and simplify tool changes.

Advantages

The high-speed steel (HSS) composition delivers durable cutting edges and good heat resistance for general metal drilling. Cylindrical shanks allow quick chucking in common drill presses and hand drills. Supplied as a set of five, the kit ensures consistency in hole size and reduces interruptions for sharpening or replacement. The bits are ground to dimensional tolerances appropriate for straightforward metalworking applications.

Suitable for

• Drilling steel, cast iron and non-ferrous metals
• Workshop maintenance and repair tasks
• Production runs requiring multiple identical drill bits
• General metal fabrication and assembly work

Key specifications

• Diameter: 12 mm
• Material: high-speed steel (HSS)
• Shank type: cylindrical
• Quantity: 5 pieces per set
• Intended use: drilling metal

How to use

Secure the drill bit in a compatible chuck and set the appropriate spindle speed for the metal being worked: lower speeds for harder steels, higher speeds for softer or non-ferrous metals. Use cutting fluid or lubricant to reduce heat and extend bit life during continuous drilling. Apply steady feed pressure and withdraw periodically to clear chips when drilling deep holes. Replace worn bits from the set to maintain hole quality and dimensional accuracy.

Usage recommendations

For best results, match drill speed and cutting fluid to the workpiece material, avoid excessive side loads that can break the bit, and store the set in a dry place to prevent corrosion.