Gedore Bit adapter 1/2 sq. x 5/16 hex. l.38mm
Matt chrome-plated For hand-operated sockets Square drive as per DIN 3120 - C 12.5, ISO 1174, with ball retention groove Hex recess drive as per DIN 3126 - D 8 (5/16"), for bits Clamping ring Chrome-vanadium steel