Seadog 420379-1 Back Up Nut: Brass Face Nut: Knurled Black Chrome with Rubber Cap Hole Size: 7/8" Length: Long: 1 1/8" maximum panel thickness Material: Brass Rated Ignition: 15 Amp @ 12v DC Rated Solenoid: 30 Amp @ 12v DC Terminal Type: 3 Screw Tab Switch Positions: Off - Run - Start Type: 3 Position Conventional Corrosion resistant construction