Drill bit Proline 71621 — metal drill, Ø16 mm, length 210 mm, 1 piece

Single Proline 71621 metal drill bit with a 16 mm diameter and 210 mm overall length. Designed for drilling metal and similar hard materials, this solid drill bit is compatible with handheld drills and drill presses and is supplied as one piece. The bit's design accommodates deeper and larger-diameter holes commonly required in workshop, construction and repair tasks.

Advantages

The Proline 71621 drill bit features a double-twist geometry for efficient chip evacuation and a 4-blade insert with optimised geometry that promotes faster cutting and smoother bore release. Its 16 mm diameter and extended 210 mm length provide access to deeper drilling positions while maintaining straightness and stability when used in correct chucks and setups.

Suitable for

• Drilling through metal sheets and structural steel
• Workshop maintenance and repair tasks requiring deeper holes
• Use with handheld drills and drill presses
• Construction jobs where larger diameter holes in hard materials are needed

Key specifications

• Diameter: 16 mm
• Overall length: 210 mm
• Material target: metal and similar hard materials
• Geometry: double-twist flutes with a 4-blade cutting insert
• Quantity: 1 piece

How to use

Secure the Proline 71621 drill bit in a suitable chuck, ensuring the shank is clamped firmly and runout is minimised. Select an appropriate speed for the metal being drilled and apply steady feed pressure without excessive force. Use cutting fluid or lubricant when drilling steels and other hard metals to reduce heat buildup and extend tool life. Retract periodically to clear chips if drilling deep holes, and ensure the workpiece is firmly supported or clamped for safety and accuracy.

Ieteicamais lietošanas veids

For best results, inspect the bit for wear before use, replace if the cutting edges are worn or damaged, and follow safety procedures including eye protection and secure workholding.