Bungee Spool

Its a spool for a bungee cord or bungee cords for your helmet it goes on top with a Velcro strip and restrains your NVGS from falling due to mount malfunction and other issue of the sorts but yeah glue the cord to the wall of the separate part attach them and through the little hole put a screw with a large head s it doesn't fly off but spins specifically a thin screw and a large head for the screw and i will spin freely however it should have some friction but more of less friction so it rubs and doesn't just let loose