For the BLUEBIRD CHAIN, Odyssey took the proven and reliable KMC 510-HX chain and added a permanently attached, factory installed half-link to one end. When the chain is trimmed to size you can easily decide whether or not to use the half-link. Original factory assembled pin joints are radically stronger than workshop assembled ones, so this is a huge benefit.
Odyssey Bluebird ChainBy: Guy Perrett on 5 April 2016A simple, cheap and really strong chain. One outstanding feature with this product is the optional half link that comes with it, which helps in a big way to adjusting your chain to the length you desire it at.