SEACHOICE 18271 Boat Self-Bailing Cockpit Mounted 2-7/8-Inch Scupper Valve Kit, Clear Efficiently drains water from self bailing cockpits Designed to be mounted over existing thru-hull fittings with 3/4 inch to 1-1/2 inch openings Diameter: 2-7/8 inch Color: Clear #6 fasteners included