Bosch PRO HSS-Co Cobalt Drill Bit

This Bosch PRO HSS-Co Cobalt Drill Bit is a 4.2mm diameter bit, supplied in a pack of 10 — a specific size often required for tapping and clearance applications in stainless steel and other metals. The ten-pack keeps a ready supply available throughout the job. Fully ground from HSS with 5% cobalt for excellent resistance to heat and wear. The centring tip allows accurate, no-wander hole starts, improving precision and reducing waste. Features and Benefits: • 5% cobalt HSS for superior heat and wear resistance • Centring tip for accurate, no-wander hole starts • Cylindrical