Hydrofarm HGGR50 (25 Pack), 1/2 Rubber Grommet, Black

Great working.

great quality grommets - actually look to be better quality than pictured. just what i needed for my dwc project! great value also - these would cost me $1 a piece at the local hydro store. would recommend for any hydro build!

This is the grommet you need to convert your cheap (or free) 5 gallon buckets to hydro grow buckets. Beware the white ones, they let in too much light, icky things may grow in your plant water.

Item was exactly what I wanted unfortunately I bought them too small. But the material is thick and sturdy. Will be buying bigger size with same manufacturer.

After using not so cheap Home Depot grommets that leaked after a month of use, I changed over to Hydrofarm Grommets, so far so good. No signs of dry root, and no leaks.

Fit perfectly

Works just as intended

So just to clarify the 1/2 is outside diameter so I think that makes the inside diameter 3/8. I will still put them to use just frustrating when I needed inside diameter to be 1/2

These are the cheapest way to add a sight glass to your bucket

Great product and seller!