Features 1、The socket is made of S2 alloy steel, which is resistant to wear and has a hardness of HRC58. 2、The surface of the socket bit has undergone bluing treatment and integrated forging to increase the service life. 3、The bit is chamfered, and the 12‑point socket bit has higher accuracy and is not easy to slip. 4、The socket has a driving arc inner angle design, which has stronger locking force and is not easy to fall off when installed on a wrench. 5、Used on electric or manual wrenches, screwdrivers or electric drills to tighten or loosen screws. Specification Item Type: Screw Driver Socket Material: S2 Alloy Steel Hardness: HRC58 Surface Treatment: Blueing Bottom Square Diameter: Approx. 1/2in Length: Approx. 55mm / 2.2in Package List 1 x Screw Driver Socket