This special part allows you to glue in place a stop. Great for setups you want to be able to dismantle quickly. We made this part for a Slow Stick in the shop that the owner setup to take down and fit back in the box after a flying session. He can glue use these stops to set the location of one of his wing mounts.
Another interesting use is as a spacer to set the distance between accessories. Also useful as a slip on bushing to glue your special projects to. Laser cut from 3/16 aircraft grade plywood. Rugged enough for most any use. Each package contains 4 stops.