Hook for attaching frames to grid wall

I needed a clip to hold a standard “sawtooth” style picture hanger on gridwall. Works well in PETG as the tolerances are on the tight side so that frames can't fall off the gridwall (the PETG can be flexed to get it over the hanger). Also discovered it works well for the white wire shelving used in closets. The file is parametric so it's easily modified for other S-hook style needs.