Miche track sprocket with carrier for track bikes and fixed gear. Miche's 2-piece sprocket system consist of a splined carrier that screws onto the hub. The sprocket is then placed on the carrier. Carrier and sprocket are secured with a lockring. Material: hardened nickel-plated steel, colour: silver, sprocket width: 3mm (compatible with wide 1/2 x 1/8" chains), available sizes: 14 - 18 teeth.