This is a CMT 2 flute 57 mm Solid Carbide Dowel Drill. It has a 22 mm cut length and a 27 mm shank length. The shank diameter is 10 mm and has a brad point. It uses a M5x10mm screw (990.003.00). The bit diameter is 1/4" (6.35 mm) and it has a LH rotation.