Battery Blade Switch for Negative Pole: Suitable for battery negative diameter of 15-17mm, suitable for 12V/24V car batteries. Applicable to car, vehicle, RV, ATV and boat batteries. Car Battery Master Switch: Avoid unnecessary battery consumption in the car and facilitate temporary shutdown when maintaining the vehicle. Simple power supply interruption: Simply lift the blade to interrupt the power supply. The battery switch prevents short circuits and fires when working on electrical installations. Easy installation: Can be set as a vertical or horizontal reed switch through the bottom of the screw. Material: zinc alloy + plastic Size: 95*65*47mm Material: brass + plastic Rated current: 250A Instantaneous current: 750A Installation: - The switch is installed on the negative pole, which is an ordinary 15-17mm battery head, and the installation location is sufficient. -The negative clip comes with the metal clip in the switch on the other pole for easy installation. -Convenient! It can also be used as a battery extension cable! Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.