Review on Hillman 701288 Assorted Split Key Rings Package, Silver Metallic, 4 Pack: Organize Your Keys with Style and Durability! by Matt Ellis

This may seem like an abstract overview. However, I needed them to fit the small hole for the air compressor relief valve. It is difficult for Revain to get a spec for the diameter of the split rings they sell. The diameter of these split rings varies by size, so finding the right ring size was easy for me. On the back of the package the diameter of the ring is clearly indicated with the diameter of the wire in a very brief context. I don't know why it isn't in the description. I would have heard, but I already threw the package away.