Pegboard Clip for 1/4 inch pegboard

This is a from-scratch redesign of GA_3D's design, made for 1/8 of an inch thickness pegboard, which can be found here: http://www.thingiverse.com/thing:559094

the original design i printed from PLA, and even too short withstood very much stress from a hook pulling on it with intent to break it, when it only flew off and didn't break. all credit goes to GA_3D, all i did was copy his design in Tinkercad. I've included two files, one which just prints one, and another which prints a dozen for m