1.11T Bicycle Jockey Wheels for Shimano/Sram8,9,10 se 2.material:aluminum 7075 3.weight:9g 4.packing card specification 11T Bicycle Jockey Wheels for Shimano/Sram8,9,10 se material: Al7075 ,CNC machineddiameter: 5 or 6mm 11T for Shimano&sram 7/8/9 se.bearing:1 piececolor:anodized red/gold/ti/blue/blackISO9001 Pictures For Shimano/Sram8,9,10 se