Material: High current master switch, on-off leakage switch, the conductive materials inside the product are made of brass and the exterior is made of alloy, durable and designed for safe use. Easy to install: Removable button, this car battery switch can be safely installed on boats or gasoline vehicles, providing an easy and inexpensive way to disconnect batteries. Perfect design: modern and stylish appearance with front panel, used for DC 12V systems to isolate and secure the electrical system, can be locked standalone or with another switch. Advantages: The switch can safely disconnect the battery and quickly cut off the power supply to avoid any loss of energy from the battery when the vehicle or boat is not in use. Wide range of uses: This high current switch is universal for trucks, cars, RVs, trailers, boats, marine applications or any vehicle that requires a battery disconnect switch.