Material: The switch studs and screws are made of copper and brass, which provide excellent electrical conductivity, oxidation resistance, and corrosion resistance. Features: Used to isolate and secure the electrical system of the battery, it eliminates power consumption when the vehicle or boat is not in use and safely disconnects the battery. Easy to use: The switch has a simple design with a 2-position on/off function, allowing the battery to be disconnected and reconnected with a simple turn of a button, effectively helping prevent battery drain. Protection function: Encased in durable ABS plastic, the switch is designed for safe use. The back cover insulates the terminals to help prevent short circuits and electric shock. Wide Applications: Suitable for cars, boats, RVs, caravans, trucks, ATVs, UTVs, battery banks, and other 12V/48V devices.