Williams M-52A Ratchet, 1/4-Inch Drive, Round Head, Fine Tooth Double pawl design with 72 teeth action provides a 5 ratcheting angle. Shift lever reverses action instantly. Knurled handle provides a non-slip grip. Chrome plating provides increased protection from rust and corrosion. Ratchet is repairable using the M-52ARK repair kit. Fed. Spec: ANSI B107.10M