Grommet for battery maintainer cable 25mm hole

thingiverse

This thing is a grommet I made to allow the end of a 12v battery maintainer cable to push through but still be retained from too easily slipping back through a thin panel. I use it on my Yamaha generator that has plastic side panels for the Optimate cable head to push through... while allowing the cable to be extracted to remove the panel from the generator. The grommet is sized to fit a 25mm hole. It has a bump on the back side to retain it... or it can be glued in place. *Print this thing with TPU or other flexible filament*. Rigid prints won't work.