With the International Tools 11.400 eco hss twist drill bit, you drill smoothly and reliably into metal. Built to standard din 338 dimensions, this roll-forged drill bit features a tough hss body and two sharp cutting edges that significantly resist breakage during general drilling. Featuring an 8.5 mm diameter and a 75 mm flute length, it delivers the exact tapping hole size required for M10 internal threads. The 8.5 mm cylindrical straight shank mounts securely into standard 10 mm drill chucks, giving you dependable accuracy in the workshop or on site.