Drill bit Proline 12 mm model 76612 — single metal bit

Proline 12 mm model 76612 is a single metal drill bit engineered for drilling precise 12 mm diameter holes in metal and similar hard materials. The bit features a standard cylindrical shank and a cutting geometry designed to fit conventional handheld drills and drill presses. Supplied as a single unit, this drill bit is suitable for workshop and professional environments that require consistent hole size and reliable cutting performance.

Advantages

The drill bit offers a standardized 12 mm diameter that supports accurate hole making without the need for reaming in many applications. Its shank and flute design are compatible with common chucks, providing stable mounting and reduced runout. Built for metalworking, the geometry helps to evacuate chips efficiently and maintain cutting efficiency during continuous use. Available lengths provide flexibility for different working depths.

Suitable for

• Drilling through mild steel, sheet metal, and similar ferrous and non-ferrous metals
• Workshop and professional repair tasks requiring a consistent 12 mm hole
• Use with handheld electric drills and drill presses for assembly and fabrication
• Applications where single-piece supply and straightforward replacement are preferred

Key specifications

• Diameter: 12 mm
• Material use: metal and similar hard materials
• Shank type: standard cylindrical shank compatible with common chucks
• Cutting geometry: designed for efficient chip evacuation in metal drilling
• Available lengths: 400 mm and 600 mm
• Package: single drill bit

How to use

Secure the drill bit in the chuck of a handheld drill or drill press, ensuring it is clamped straight and with minimal runout. Select an appropriate cutting speed and apply cutting fluid or lubricant as needed for the metal being drilled to extend tool life and improve hole quality. Start drilling with moderate pressure, allowing the bit to cut progressively and evacuate chips. Withdraw periodically if drilling deep holes to clear chips and reduce heat buildup, then resume until the required depth is reached.

Usage recommendations

For best results, match drill speed and feed to the workpiece material and use cutting fluid when drilling harder metals. Inspect the cutting edges before use and replace the bit when wear or chipping is visible to maintain hole accuracy and prevent damage to the workpiece.