Socket spanner insert 3/8" 12-edged Gedore D 30

Acc. to DIN 3124, ISO 2725-1, Square drive as per DIN 3120 - C 10, ISO 1174, with ball retention groove, Manually operated, with non-slip cross knurling, GEDORE vanadium steel 31CrV3, polished, chrome-plated, * not standardised