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.

If it comes up a few links short for your bike, which happens from time to time, let us know and we will send a few more free of charge.
We have sold hundreds and hundreds of these and have not had one failure reported... damned strong chains.