Square drive as per DIN 3120 - C 12,5, ISO 1174, with ball retention groove, Screwdriver bit socket 1/2", XZN, with pressed-in, phosphated pin, with non-slip longitudinal knurling, drive end polished, Chrome-vanadium steel, matt satin chrome-plated, For hand-operated applications, Plastic case in GEDORE red Design, Clamp-secured tools, Metal hinges/fastener