This Teng 12-point bi-hexagon socket is designed for professional mechanics and DIY enthusiasts requiring reliable fastening tools. Featuring a 1/2in square drive, this socket is engineered for high torque applications and is manufactured to meet ISO 9000 and AS954 specifications, which help reduce the risk of rounding fasteners during use. The construction utilizes chrome vanadium steel to provide strength and durability for frequent maintenance tasks. It features a satin finish that resists wear and is built to withstand rigorous mechanical work environments.