Click Stop® Adjustable Spud Wrench, 16 1 8 in L, 1 1 2 in Opening, Black Oxide no checkout Non abrasive sweeping compound safe to Non abrasive sweeping compound safe to use on any floor Perfect for collecting dirt and dust on all types of wood Used to provide leverage on hand operated valve wheels Permits a smooth snap hammer action to make opening and closing stubborn valves easy The special shaped opening in the wrench reduces the chance of slippage when working in overhead or crowded positions Easy jaw adjustment Large serrated knurl for jaw adjustment Clik Stop® automatic locking jaw slightly tapered jaw for access in tight work areas Radius corner design increases strength and fastener surface contact area