NO MORE BATTERY DRAINBattery cutoff switch helps isolate and secure the electrical system, eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely EASY TO USEknob type, easy to install & simple to use. Loose / twist of the knob, then power will cut HEAVTY DUTY Our battery isolator switches are solid brass made, rust and corrosion resistant, durable made for safety use WIDELY APPLICATIONThis side mount battery disconnect switch are used for GM side post batteries or other batteries which have a 3/8" side post terminal, also used for electrical equipment COMPATIBLEPackage include: 2 PCS side post battery disconnect switches. With a long bolt, used for side post terminal, battery NEGATIVE post 3/8" hole only, DC 12 V system, rated current: 125 A, On/Off 2 position