The cyclocross chainring by Absolute Black is a fantastic upgrade for serious riders who desire ultimate performance from their chainring. Designed to fit on any 110 or 130 BCD crankset, the Absolute Black CX ring is the ideal option for those running a 1 x 9, 1 x 10, or 1 x 11 drivetrain. Machined from 7075 Txxx aluminum for excellent rigidity and low weight, as well as wear resistance. Each Absolute Black chainring utilizes the Narrow-Wide tooth profile to ensure unparalleled chain retention. Essentially, each tooth on the chainring is specially crafted to fit the male or female parts of the chain seamlessly, while securely holding the chain in place without the use of a chain guide to prevent any chain drop. Even over the roughest terrain, Narrow-Wide technology retains your chain while coasting, backpedaling, or sprinting.