Description: It solves the battery car, motorcycle and car batteries electric leakage and lack of electricity problem due to infrequent leakage. Battery car/ motorcycle/ car flooded with many relays and electrical equipment, sometimes even if the vehicle is parked, it still consume electricity. After a few weeks parked, the battery has no electricity. Some cars driving a short distance every day, the battery is not full recharged, and it is self-discharge at night, resulting in battery power loss. Old vehicles, wire insulated part is burn-in, resulting in vehicle self-discharge, cost to checking the car is so high, but this switch can solve the problem of self-discharge when stopped. Specification: Material: Copper Plating Alloy Color: Rose Gold Length: Approx. 74mm/ 2.91 inch Height: Approx. 47mm/ 1.85 inch Pole Diameter: 17mm/ 0.669 inch Type: Universal Applications: Battery negative post 15-17mm(0.591-0.669") diameter, 6V/ 12V/ 24V car truck, bus, RV, trailer battery, ect. How to use: Installed on the battery negative, the battery clip to connect and extend the other side, it can turn on/off the power via the of the switch close/open. Package Includes: 1 Piece of Closing Switch Note: Please allow 1-3mm due to manual measurement, make sure you do not mind before you bid. The colors may be different for the different display, please understand.