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

Works just as intended

The inside hole (id) is 1/2 diameter...it will not fit inside of a 1/2 hole (which would be OD of 1/2) Bamboozled again!

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.

working perfectly love it.

Holds seal perfectly.

Great product and seller!

Great product, Great service, fast delivery, highly recommended.

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 gromet is rather small to be using with PVC however, use 3/8 pipe and you should be good to go!

The proper size for 1/2 inch schedule 40 pvc is the 3/4 inch size. The grommet is sized to outside of pipe diameter.