Product Description: Made of zinc alloy.Brand new and high quality ensures long life service and strong durability.Connects direct to the battery terminal is cut off by loosening the green wheel.Effective to solve theses problems，electric leakage and loss of electricity.Fit for different types of batteries as long as the diameters their pile heads are 1.7cm. Specification: Product material: zinc alloy copper plating Suitable for single product binding posts: 1.5-1.7cm Aperture: 1.7cm Size:8.6cm*3.6cm Role: protect the battery and prevent self-discharge. Package Content: 1 x Battery Terminal Link Switch Note: (1) All pictures are professionally colored, but due to the different ambient light and different display device settings, there may be some deviations between the pictures you see and the items themselves. Please understand. (2) The data is measured manually, and there may be some deviation, but it does not affect the use.