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.

- 1/2" x 1/8" - 100 Links - Single-speed - BMX Racing, Freestyle - Hollow Pins - Half Link Design