ONE HALF ounce of 16 gauge 5/16" inner diameter Rubber O-Rings.

Aproximately 170 o-rings per ounce.

These glow-in-the-dark rubber o-rings are made from silicone rubber. They are UV resistant, safe to use and non-toxic. They are charged by full spectrum light and have a decent glow time after charging. These rings are different colors than our regular o-rings - so you have a wider spectrum to play with. They also glow fantastically under blacklights!

Please note: These rings are not as stretchy or as strong as the our regular rubber o-rings in the same size. These o-rings also seem to stay cleaner than our regular rubber o-rings of the same size. For example regular white rubber o-rings will get dirty with wear; however silicone o-rings don't seem to get dirty at all!