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: Loosen it: Power OFF Screw up: Power ON Material: Copper Plating Alloy and Plastic Main Color: Golden Knob Color: Random Size(LxW): Approx. 60x55mm/ 2.36x2.17 inch Type: Universal It can disconnect battery cable in less than a second, just by turning the knob. How to use: 1. Find your storage battery, and take out the wires of the battery pile head pole. 2. Install the battery disconnect to the negative pole of the battery. 3. Remount the wires of the battery to the battery disconnect. Package Includes: 1 Piece of Quick Cut Off Disconnect