Irwin HSS Cobalt Drill Bit

The Irwin 3mm HSS Cobalt Drill Bit is a versatile size perfect for general metalworking applications in stainless steel and other high alloys. This diameter is commonly used for small to medium fixings, pilot holes, and everyday fabrication tasks where durability and performance are essential. Manufactured from high quality HSS steel with 5% Cobalt content, this drill bit offers exceptional heat resistance and significantly extended life when drilling demanding materials. The added Cobalt improves the red hardness of the bit, enabling it to maintain its cutting edge under the high temperatures generated during drilling operations in stainless steel. The 135° split point grinding ensures perfect centring from initial contact, reducing drilling pressure and eliminating bit walk for accurate hole placement. An industrial quality ground flute design ensures high accuracy drilling whilst facilitating fast, efficient chip removal to prevent binding and maintain optimal performance. The attractive golden tempered surface finish indicates the superior heat treatment process that gives this bit its enhanced capabilities.