This is a remix of the superb Snap in hook, made to fit String shelving system. I've made it slitghly thinner to better match the wires used by String, and also phased of the corners a bit so you don't scratch that expensive shelf.

The hook snaps in to place and fits both the standard and the smaller pocket versions.

I printed with rPLA from Lostboyslab and 100% infill just to give it a little more strength.