Sealey DB040CB HSS Cobalt Drill Bit 4mm Pack Of 10

Fully ground HSS Cobalt drill bit manufactured to DIN 338. 5% Cobalt gives increased heat hardness which helps extend the life of the drill bit. 135° Split point is self-centring which helps to reduce thrust and aids an easier penetration. Efficient clog-free swarf clearance. Suitable for drilling high carbon and stainless steel. High density case for safe storage.