Beckson Marine 1" Drain Plug Screw Type w/Gasket - Black. Ideal installation for transom of personal watercraft small boats fish wells coolers ice chests water tanks etc. Part should be mounted in a 1" ID hole with two S/S fasteners and positioned with gap in thread at lowest point. Package Contents: Beckson Marine 1" Drain Plug Screw Type w/Gasket Beckson Marine DP10-B: 1" Drain Plug Screw Type w/Gasket - Black