Deore XT Mountain Chainrings.Chainrings from Shimano HollowtechII & Octalink MTB cranksets have different length tabs & are not interchangableItem SpecificationsColorBlackMaterialSteel/CarbonTeeth32teethBolt Pattern4-BoltChainring BCD104mmRing PositionMiddleChain Compatibility9-SpeedDefined ColorBlack