Simple replacement clips for a bungee cargo net. The originals were not large enough to bite onto my trailer rails. I got tired of clumsily wrapping the old ones around my rail and hooking them back on the net. so I made up some custom ones that simply hook. Their comma shape keeps them hooked while still being easy to remove on purpose. 

First batch was printed with pla because that's just what I had. Can be printed without supports laying flat. You can fit six on a k1c print bed. Since these technically are under stress I recommend 30% infill and a triangular versus square pattern.