36T-26T / 38T-28T,GXP Mountain Bike Double Chain,Crown for SRAM XO1 X1 GX XO X9,Great PerformanceFeatures: Applicable to GXP XX1 X9 XO X01 crankset .Contact us if you have questions,we will try our best to serve for you.The chain is not easy to fall，professional and durable.The teeth: 36T-26T / 38T-28T.brand new and high qualityThe alternating positive and negative teeth design makes the chain more stable and smooth.Specifications: Material: Aluminum Alloy Brand: SWTXO Color: BlackPackage Includes: 1x Mountain Bike Double Chain.Note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!