This is the JJC Lens Cap Keeper Cord [JUPN200] The JJC Lens Cap Keeper Cord attaches to the lens cap by a simple adhesive pad, while the cord can be threaded through the camera strap attachment point to fasten the lens cap to the camera and prevent accidental loss. The cord is approximately 150mm (6 inches) long which is ideal for compact cameras and micro 4/3 style cameras. It’s not designed for use on SLR type cameras with large lenses. Features: Attaches lens cap to the lens, to avoid losing it Convenient, easy to use and lightweight ...Contact us if you need more help.