Wire rack hook

This hangs on the side of a wire rack shelf. Our shelf height was 0.981 inches from the top of the top wire to the bottom of the bottom wire, so center-to-center was right at 0.8 inches. The smaller of these, #1, was able to hold a heavy school backpack, but flexed quite a bit. The thicker one flexed much less, though it isn't a replacement for a metal hook.

The thinner hook is 0.25 inches thick and 0.25 inches wide (from flat side to flat side). The inside radius of the hook end is 0.375