For exhaust hose with internal diameters of 60mm, to be used with a long length of exhaust hose. These Waterlocks are provided with a drain plug. Vetus Waterlock will collect the cooling water present in the system when the engine is stopped Has great sound-deadening capabilities Acts as a very efficient muffler Capacity: 10.5 Litres Good condition FunFish Marine Rental Supplies & Services 2075 Tryon Road North Saanich, BC (@ Westport Marina) Call or Text Peter 250.883.8448