These are KMC 1/8" singlespeed chains. We have tried many chains over the years and I believe you won’t find a better singlespeed specific chain.
These claim to be stretchproof (stretch resistant would be a more realistic description),
- heat treated bullseye rivets
- engineered to run quietly.
- 112 links long.
We have sold hundreds and hundreds of these and have not had one failure reported... damned strong chains.