A clip to be rid of the damn zip ties! a very tight fit that is an easy print to help prevent slippage of you belts due to poor zip ties, and it also keeps your belt flat and squish-free.For best results print 2, OR, print one with double the z height. For the Y axis (arm) the closed end of the clip must be towards the inside of the metal arm (facing away from the open end of the arm).