The Odyssey Bluebird chain is an Industrial Strength, 112 link 1/2 x 1/8` chain with Odyssey logos stamped on the links. The Bluebird also comes with a half link and a master link included for customization The Odyssey Bluebird chain is an Industrial Strength, 112 link 1/2 x 1/8` chain with Odyssey logos stamped on the links. The Bluebird also comes with a half link and a master link included for customization