Lightweight and ergonomically designed, this excellent 1/4″ professional ratchet makes a great addition to any tool kit. Featuring an all steel body with anti-rust polypropylene casing and ergonomic handle, the PRO391 is a joy to use and built to last. The PRO391 also features 50 ratchet increments for extra fine nut adjustment for versatility and usability and quick socket release. 1/4″ Drive. Ultra smooth 72-tooth ratchet action. 50 ratchet increments for extra fine nut adjustment. Quick socket release with spring ball retention. Positive acting, thumb operated flip reverse lever. Overall length 145mm.