Sea-Dog 4227661 Heavy Duty Off/On Battery Switch JOHN It incorporates a nylon housing

It incorporates a nylon housing and a butyl rubber diaphragm to maintain pressure for years

It prevents water from taking on chlorine

Will not open with high pressure and will close with no or low electric current

Grab hole in paddle for hand and handle has double hook

60366Q1 Mercury Marine/Quicksilver Repair Kit

Sea-Dog 4227661 Heavy Duty Off/On Battery Switch JOHN It incorporates a nylon housingThis Heavy Duty Battery selector switch has 380A continuous and 2000A cranking amps, giving it the power to start a large single or dual diesel engines. Can be surface or rear panel mounted. Ignition protected. Safe for installation on gasoline powered boats. Constructed of injection molded nylon with machined brass contacts. Installs with four #10 RH fasteners (not included).