Made of Stainless Steel 304 & Rubber

Rugged corrosion resistant construction

Easy to use cam style for tight,long lasting seal

Mount from inside transom

Twist turn -Fully adjustable will not leak or jar loose under vibration

Suitable for3/4" 1" or 1-1/4" hole

Usually use for Boat bilge transom seawall baitwell Livewell hull