Perko Watertight Deck Connection - ZincMade from chrome plated zinc alloy. Rated for 15 amps at 12, 24, and 32 volts polarized double contact connector. This connector accepts up to #14 gauge stranded wire. Included with this connection is a flange gasket with integral waterproof cap for base when plug is removed.Specifications: Diameter: 1-5/8"; Height: 1-3/16"; Screw Size: #6;