These cam action lever fasteners allow for quick fastening and unfastening without the use of tools. They allow the user to tighten by threading like a traditional fastener however, for final tightening the cam lever is pushed downward. To unfasten, the cam lever is pulled up releasing clamping force and allowing the fastener to be unthreaded. These adjustable cam levers feature a slot on the top of the stud to allow for fine adjustments of the tensioning lever, without having to rotate the handle. They are ideal for quick change operations where space may be limited or precise tension has to be applied. The handles are made from glass-fiber reinforced plastic. The steel studs have a blue chromate finish. The thrust washers are made from plastic.