kwb COBALT HSS Metal Drill Bit 8.5 mm

kwb COBALT HSS Metal Drill Bit 8.5 mm

The kwb COBALT HSS spiral drill bit is designed for drilling into metal and steel. With a 8.5 mm diameter and a cylindrical shank, it delivers precise, clean holes in hard materials.

• COBALT HSS alloy provides extended durability and heat resistance during metal drilling
• 8.5 mm drill bit diameter suitable for a wide range of metalworking tasks
• Cylindrical shank ensures a secure fit in standard drill chucks
• Optimised spiral flute design removes metal chips efficiently for uninterrupted drilling

What makes the kwb COBALT HSS drill bit stand out

The 5% cobalt content in the HSS alloy increases hardness and heat tolerance, allowing consistent performance even at high drilling speeds on tough metals like steel. Unlike standard HSS bits, the COBALT formulation maintains edge sharpness longer, reducing the need for frequent replacements.

Ideal for

Metalworking professionals and workshop users who regularly drill into steel and metal surfaces. Suitable for fabrication, maintenance, and assembly tasks where precision and drill bit longevity matter.

Application of the kwb COBALT HSS drill bit

1. Mark the drill point and secure the workpiece firmly
2. Use a centre punch to create a starter indent
3. Apply steady pressure with the drill at moderate speed
4. Clear chips periodically to maintain drilling efficiency