This ratchet features a Quick-Release button mechanism for positive lock on sockets. 5 Degree arc swing and Slim head design for maneuverability in restricted areas. 72 Tooth gear system for high torque ratcheting. Contoured, ergonomically designed handle with anti-slip grooves for comfort and control. Chrome Vanadium steel construction for strength and durability. Low profile directional lever. Meets or exceeds ANSI/ASME standards