[EXTRA STRONG] The socket is made from chrome vanadium steel for strength and flexibility. [INCREASED GRIP] Satin finish for a better grip when handling the socket - perfect for oily environments. [GREAT FOR TIGHT SPACES] 12 point design is ideal for use in confined spaces and more access positions allow you to work with different types of fasteners. [INSTANT IDENTIFICATION] The socket features roll stamped markings to ensure permanent and instant socket identification. [SECURE DRIVE] Ball bearing recess on the female end to grip a ratchet or extension bar securely. Manufacturer: Teng Tools