Professionals worldwide prefer Proto Industrial Tools for their outstanding quality durability and dependability. Professionals for heavy-duty industrial applications including auto-manufacturing plants steel and airplane manufacturing chemical plants refineries general manufacturing transportation and fleet maintenance for trucking transit and aircraft use Proto Industrial Tools. With a global distribution network Proto Industrial Tools are available on-the-job anywhere in the world. Minimizes operator fatigueLocks at any position .Spring loaded ratchet mechanism .Replaceable tips in 0°, 45° and 90°