Snap-on’s 3/8-inch Drive Air Ratchets feature a revolutionary design with a classic style that provides the power and speed needed to improve productivity and efficiency. The Air Ratchets feature: a classic Snap-on design that delivers 65 ft. lbs. at 225 RPM, patented “stop lock” pins that prevent ratchet pawl lock-up, dual pawls for smooth operation and performance, steel wear bushings to prevent ratchet head wear, comfortable variable speed trigger for added comfort and control, zerk fitting in selector knob allows ratchet head lubrication for longer tool life and tip valve style trigger provides featherability and versatility.