The Snap-on Cynergy Series 3/8" Drive Ratchet features a 100-tooth gear with 3.6 degrees of swing arc. The tool's low-profile head provides additional access in tight working spaces. The mechanism is sealed to keep lubricants in and contaminants out, and its steel reverse level enhances strength. The Cynergy 3/8" Drive Ratchet is available in lengths ranging from stubby to extra-long, with a straight or flex head, and with a steel contoured or soft-grip handle design.