Made of high quality 316 stainless steel precision casting, corrosion resistance, no rust, strong and durable. The design of Spring bolt，can be quickly disassembled and assembled, easy to use and safe. The tail ring rotates 360 degrees to prevent knots. The surface has been polished, with high precision and brightness, which can effectively prevent rust and corrosion. Can be used for wire rope, diving, surfing, outdoor survival, ropes hung a quick-release occasions.