Gedore Torx Screwdriver Bit, T40 Tip, 55 mm Overall - ITX 19 T40

DIN 3120, ISO 1174. Torx Socket Screwdriver Bit. Torx head socket bits for use with recessed torx screw heads in place of a torx key, for use with 1/2in socket wrenches. Square drive with ball retaining locking groove Knurled grip Vanadium Steel construction with Manganese Phosphate finish