Ooze Resolution Glass Cleaner Caps (1 Large, 2 Small, Black/Green Bundle) Silicone Stretch Caps - Universal Caps for Cleaning, Storage, Odor Proofing - Resolution Gel Glass Cleaner Accessories

They work well and it's cool mixing and matching the colors

Worked for a number of my water pieces. Great product

Good fit just not for small piecesn

I used to use plugs. Because of air pressure in the bong, when you use plugs one of them always pops out. These caps don't do that. They fit tight and have never fallen off. I have about 40 bongs of various sizes, and ooze caps fit all of them (yes, I said forty and that's just my bongs!). I have even bought a second set just to have. I consider myself to be a semi expert on glass pipes, and these are the only cleaning caps you need.

Love the ease it brings when cleaning my glass

Love them does as needed

I'm not necessary a neat freak, but I do love smoking out of a clean glass piece. These caps really make it easy to clean my glass every night so my seshes are even more enjoyable.

Was expecting a black pack and a green pack because there listed as a bundle. Only got one.Good product just disappointed on arival.