With the Facom 222A.T12.5 ground hss twist drill bit, you drill clean and accurate holes across demanding workshop metals. Featuring a 12.5 mm diameter, a total length of 152 mm, and a 12.5 mm straight cylindrical shank for drill chucks of at least 13 mm, this metal drill bit is built for reliability. The ground hss construction with two cutting edges ensures efficient chip removal and smooth cutting action in steel up to 800 MPA, stainless steel, grey cast iron, and aluminium alloys.