A professional bi-hexagon, AF socket produced in accordance with ISO 9000 and AS5954 specifications for increased torque and reduced risk of rounding fasteners.Manufactured from chrome vanadium steel with a satin finish.1/2in Square Drive.Select Option 1.1/16in1.1/4in1.1/8in1.3/16in1/2in11/16in13/16in15/16in1in3/4in3/8in5/8in7/8in9/16in Add to Basket Quantity