Description: This switch can be used for circuit refit on car, truck, RV, boat, trailer.etc to keep from electric leakage. It is also used on high power electrical appliances as a power switch. Rated: 12V 300A Screw to Screw Length: Approx. 49mm/2.0'' Screw Diameter: Approx. 9mm/0.4'' Material: Copper Package Includes: 1 Piece Switch