TOPIC: impact drain.. or something like it

The dash on my MFG has a recessed area which has a small drain fitting. About 1/4" diameter hole. Almost looks like a rubber grommet. I'd like to replace it and add a second. Most of the impact drains I've looked at seem a bit too big. anyone familiar with these? I'll try to post a pic if that will help..

Thanks
Oldboater