The Scotty Fire Coupler Spanner and Gas Wrench is a durable, lightweight wrench used to tighten and loosen 1" (25mm) to 3" (76mm) fire hose line couplers, swivel hose fittings and anvil lug couplers. The tool can also be used to open standard 70mm caps on 5 gallon foam concentrate containers. There is a slot for use as a gas cock shut off. The Spanner and Gas Wrench is made from incredibly tough, glass-filled nylon, comes in a high visibility yellow color, is spark and corrosion proof and includes a quick snap belt clip. The Spanner and Gas Wrench is 7.5" (190mm) long and weighs just 2.75 oz. (79g).