SureWerx 682917 JET 1/2" F x 3/8" M Locking U-Joint Adaptor - Model Number PLUJ-1238

Industrial quality impact universal joints made of high impact steel and offering flexible access to hard to reach fasteners. Sockets made of the finest quality S.A.E. 4140 Chrome Molybdenum high impact steel. Meets or exceeds U.S. Federal Specs: GGG-W-660A and ANSI specifications. Patented hex ball and socket design eliminates connecting pin for increased safety. Ball and socket distributes force evenly for greater torque and longer life. Eliminates broken connecting pins, the major source of U joint failures