Application:For 3/8" and 1/2" square head socket wrench inserts with ball lock
Design:For manual and machine-operated tools (non-impact), with ball stop groove, knurling at the rear end for manageability during manual use; chrome-vanadium, brushed chrome-plated finish
Drive:1/4" socket square head
Technical Specifications:
- 781 A 1/4" Connection parts, 781 A/B x 3/8 x 25.2 mm x 1/4"