1、High Quality: The battery isolator switch is made of high quality metal alloy and copper material, which is sturdy, solid, high strength and wear resistant, and good isolation capacity with long lifespan. 2、Prevent Leakage: Battery Disconnect Switch provides power cut off to electrical system in an emergency, to help prevent battery drain, safety and efficient. 3、Safety Protection: Quick cut off electrical power, help protect against electrical fires, provide a reliable way to shutdown electrical power during maintenance and protect batteries from excessive drain. 4、Widely Application: Safety battery disconnects switch universal applied for street roads, rvs, trailers, or any vehicle where a battery cut off switch is required. 5、Easy Operation: Knob detachable and with spring, this car battery disconnect switch can be controlled by switching to counterclockwise position. Protect the power supply and prevent leakage.