Back Up Nut: Brass Face Nut: Knurled Black Chrome with Rubber Cap Hole Size: 7/8" Length: Long: 1" maximum panel thickness Material: Brass Rated Accessory: 15 Amp @ 12v DC Rated Ignition: 15 Amp @ 12v DC Rated Solenoid: 30 Amp @ 12v DC Terminal Type: 4 Screw Tab Type: 4 Position Conventional Switch Positions: Acc - Off - Run - Start Corrosion resistant construction