Description: Prevents shorts and fires when working on electrical systems. Mount on negative battery post only. Simply lift the knife and then power is cut. The easy way to disconnect electrical power on any vehicle, without tools. Disconnect batteries quickly and easily. Specification: Negative Clamp Diameter: Approx. 15-17mm/0.59-0.67 Inch Positive Post Diameter: Approx. 15-17mm/0.59-0.67 Inch Material: Copper Size(L*W): Approx. 90*45mm/3.54*1.77 Inch Package Includes: 1 Piece Car Battery Switch
