Irwin HSS Cobalt Drill Bit - 4mm

These Irwin metric HSS cobalt drill bits are perfect for drilling stainless steel and other high alloys

• Their 135 Deg split point grinding ensures perfect centring and reduced drilling pressure
• An industrial quality ground flute ensures high accuracy drilling and fast removal of chips
• The drill bit body is manufactured from high quality HSS steel containing 5% Cobalt (Co)
• The added 5% Cobalt improves the red hardness (heat resistance) of the drill bit and results in significantly extended life
• It has an attractive golden tempered surface finish
• Specifications: Diameter: 4.0mm; Working Length: 43mm; Overall Length: 75mm