[Features] ●Prevents accidental disconnection of cables. ●It can be installed easily without tools. ●Prevents accidental disconnection of RCA pin jack relay plugs. ●Consists of a hook-and-loop fastener with a magic hooker (concave and convex mixed type) to hold down the plug and a separate magic hooker. ●The hook-and-loop fastener can be processed to match the mounting base on both the concave and convex sides.