The product is made of alloy and then plated with copper. The proportion of scientific alloy makes the product longer life than ordinary alloy products, and the performance is better. The alloy has excellent plasticity at the same time with good conductivity, can reduce the voltage distortion, reduce current transmission loss. With corrosion resistance, good conductivity, easy wiring and so on. Connects direct to the battery terminal and is cut off by loosening the green wheel Universal fits all 6v,12v and 24v all kinds of pile head diameter 17mm batteries,for cars,boat,motorcycle. Specification: Material:Metal Color:Yellow Size:approx 100mm*25mm*35mm Package Includes: 1 Piece Battery Quick Cut off Switch Note: Please check the picture and size carefully before purchase!