Cobalt Bit 1/4″

Bosch CO2143, 1/4 Inch Cobalt Drill Bit.
Designed for durability, high heat resistance. Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum. Designed for maximum speed and life. Pilot point and split tip design. No bit walking – more user control. Intended to be used on hard metals.