This is a clip that snaps over the top of a Baby Jogger City Series stroller handle so that you can suspend a small bag between the handles. (You provde the bag.) It uses the screw holes on the handle as secure attachment points. Print two, one for each side (they are reversible.)
Print. Place the short end over the handle (below the screw pegs), align the holes, and "roll" the long end down. The clip flexes and snaps onto the handle.