Check the listing for details. 12V 50A Waterproof Switch Push Button Cars Boat Track Horn Engine Start Starter. Condition: New. Listed at 2.99 USD. Features: - 100% brand new and high quality - For automotive, marine, boats, and much more applications - Heavy Duty (50 amps) push-button momentary switch that is dust and moisture resistant - 12V DC, 50A, SPST (single pole, single throw) - Contacts are pure copper for long life - Some sellers advertise the contact as being silver. But this is not true. They are all copper - Screw terminals are brass, nickel plated - Recommended mounting hole: 0.625" (5/8") - Maximum panel thickness: 0.500" (1/2") without boot; 0.312" (5/16") with boot - CAUTION: Disconnect negative battery cable before installation - Life: = >10000 Times Presses (Factory Tested. Minimum press test > 10000 times) Package includes: 1pcs switch.