Features: --It is very convenient and connect lines safe and efficient. --The most important thing is that no matter how many lines need to be connected, it can be used. --Thickening design of the base, Tighter and cleaner --External ring fixation, automatic peeling. --Anti-rust, use persistence to improve. --Easy to install, not easy to slip, hollow design, simple and beautiful. --Stripping clean, saving time and effort, increasing work effectiveness. --Oblique Line Hole design, and the line is tight, not easy to occur short circuit to improve savety.