Durable bronze thru-hull fittings for long service life in the marine environment.Bronze Mushroom Thru-Hull Fittings with Barb for Hose. For above the waterline installation. Good choice for scupper, sink drain and bilge pump overboard discharge.DimensionsFits Hose IDMax. Hull ThicknessFlange ODSFPLU#Model1/2"1 1/16"1 1/2"65-BN7-973564383/4"1 5/8"1 7/8"65-BN7-983564531"1 3/4"2 1/4"65-BN7-993564461 1/8"1 7/8"2 3/4"65-BN7-0318405111 1/4"1 7/8"2 3/4"65-BN7-013564611 1/2"1 7/8"3 1/8"65-BN7-02356479