Sealey HSS Cobalt Drill Bit 4mm Pack of 10

This 4mm HSS Cobalt drill bit is ideal for a wide range of metalwork applications. The 4mm diameter is commonly used for electrical installations, mounting work, and general fabrication in high carbon and stainless steel. The cobalt content ensures the bit maintains its cutting edge even under demanding drilling conditions. Supplied in a pack of 10 with a high-density storage case. Features and Benefits: • 4mm diameter for versatile workshop use • 5% cobalt extends tool lifespan •