WERA 05042673001 781 B/C 3/8" VERBINDUNGSTEIL ADAPTOR, 3/8"

Connection part 3/8" square head socket to 1/2"external square head. For manual and machine-operated tools (non-impact), with ball stop groove to safely lock the socket, knurling at the rear end for manageability during manual use; chrome-vanadium, dull chromed.