The Yak Gear Bungee Button is a quick release fastener for tank well or paddle keeper systems. The nylon button holds up to ¼ inch bungee. Recommended hardware is #8/32 x3/4 inch flat head screw and locknut. Tri grip rivets do not work for installation because of a smaller grip length. Water proof silicon recommended, but not included. Perfect for paddlesport accessory installation in fresh or saltwater.