Features: brand new and high quality Our battery kill switch is made of solid brass and copper. It features superior performance and good conductivity. Used for battery to isolate and secure the electrical system, eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely. Our master battery cutoff switch works with top post batteries for a wide range of vehicles including most for cars, boats, trucks, RVs, and even jet skis. High current switch; the instantaneous current can reach 1000A, and continuous current 300A. The base is detachable for easy installation. Specifications: Material:Copper Size:Approx.6.8x6.8x7.8cm/2.68x2.68x3.07in Rated Current:300A(12V) Instantaneous Current:1000A(12V) Net Weight:500g Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Battery Disconnect Switch