Large wide-opening clamp, available in several configurations. Choose either a solid arm for fixed spindle location, or an open arm for adjustable location. Arm opens 106º while handle moves 58º. Accepts any 3/8-16 spindle. Supplied with (2) flanged washers. Available with safety-lock feature. This safety lock automatically engages when the clamp is closed, then remains locked until manually disengaged by pressing the lever before opening. This prevents the clamp from being accidentally opened by bumping the handle.