• Battery disconnect switch designed to cut off power and prevent unauthorized use of the vehicle. • Ideal for cars, boats, trucks, caravans, and more. • Allows you to quickly and easily disconnect the battery for added security, maintenance, or storage. • Easy to install and use; tighten the green knob to activate power and loosen to disconnect. • Handles 12 V up to 125 A continuous and 500 A momentary current. • Made of copper-plated zinc alloy, resistant to rust and corrosion. • Prevents battery drain when storing and repairing vehicles. • Fits motorcycles, cars, vans, boats, and electrical equipment. • Product size: 3.3" x 1.5" x 1.5". • Fits all standard size round post batteries.