Apex EX-377-4 Squared Drive Adapter, Imperial, 3/8 in x 1/2 in Drive, 4 in OAL

Apex® 3/8'' square Drive™ adapters, 1/4'' to 3/4'' male square from Cooper Tools. Apex® square Drive™ adapters have hex tolerances that are on average 48% tighter than DIN and 35% tighter than ANSI requirements. All Apex® square Drive™ adapters have the tightest tolerances for straightness and concentricity in the industry. With Apex® square Drive™ universal adapters you are assured of an exact, sure fit.