O Ring/D Ring? Does anyone know where I can get one?

I am looking to purchase an o ring/d ring to attach into one of my toiletry kits. Does anyone know where I can get one? Something similar to the size of the Tom Bihn ones. Thanks!

[BPritchard]

Bag hardware and attachments

This site may help.

If you alter your bag, I think the warranty is no longer valid.

[Pord]

That is perfect. Thanks.