De Neers Hand Tools Combo of 19-50 mm and 50-80 mm Adjustable Hook Wrench

Hook wrenches are used to grasp, tighten, or loosen round, notched, or multifaceted industrial parts like pipe fittings and lock nuts. Regardless of whether the hook or head of a hook wrench is movable or locked in place, the inner curve typically terminates in a tiny, downward-pointing tooth or claw.