Heavy duty chrome vanadium construction for superior strength and durability. Reversible, 72-teeth ratchet mechanism for fine adjustment in confined spaces. Ball bearing locking system with push-button release mechanism for quick inter-change of sockets. Dual component, non-slip grip for added comfort and control. Hex and Bi-Hex design to accommodate a range of fasteners and bolts. Rust-resistant satin chrome finish. C.K Sure-Drive system applies torque to the flat of the nut rather than the corners to avoid rounding-off. Contents: Sockets (12 tips) sizes: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22 and 24 mm, 72 reversible teeth 3/8", 75 mm and 150 mm extensions, 3/8" universal toggle, 3/8 "Mx1/2 "F T-handle adapter