This unique product enables repairs to be made to seacocks and ball valves without lifting the boat. Everybody hopes they will never have to touch the through-hull fittings, but you should be prepared because stuff happens on boats. The age-old remedy for working on through hulls has always been the tapered wooden plug but it is very difficult to replace a ball valve using a wooden plug. With a Sea Stopper it's easy and you won’t even get your hands wet.
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