1/2" Grommet

This is a ½" grommet that was used to run wires through a trailer axle. The factory grommets had long rotted away and allowed the wires to short out where they came out of the hole. I drilled the hole bigger to ½" in order to fish the new wires through and inserted this grommet to help keep them from wearing against the steel. I printed this in TPU for AMS and applied some heat with a heat gun in order to push it into the hole. It is designed for a wall thickness of 8mm or roughly 5/16".