Back Up Nut: Brass Face Nut: Hex Black Plastic Hole Size: 7/8" Length: Long: 1 1/8" maximum panel thickness Material: Marine grade glass-filled Polyester Rated Ignition: 15 Amp @ 12v DC Rated Solenoid: 30 Amp @ 12v DC Terminal Type: 3 Screw Tab Switch Function: Off - Run - Start Type: 3 Position Conventional Maximum corrosion protection - eliminates oxidation Inner seal between cylinder lock and contact plate Non-conductive housing eliminates potential shorts