This professional Teng TENM120122 Bi-Hexagon Socket features a 12-point design and is suitable for regular A/F applications. It has a 1/2 inch square drive and a size of 11/16 inch. The socket measures 38mm in length and is manufactured to ISO 9000 and AS5954 specifications, ensuring increased torque and reduced risk of rounding fasteners. It is made from chrome vanadium steel with a satin finish.