This is the JJC Snap on Lens Cap 86mm with Cap Keeper [JUPN097] The JJC LC Series Snap-On Lens Cap is a lens cap for use with lenses that feature a 27-95mm filter thread. Keeping the lens covered with a lens cap when not in use will protect the lens from impact, dirt, or dust. Supplied with a cap keeper cord. ...Contact us if you need more help.