1. 27 Speed AEST Lightweight Jockey Wheels for Bike
2.  Weight:9g
3. Material:AL7075 CNC Machined
4. Diameter:Ø5 or 6mm 
5. 11T for Shimano&sram 7/8/9 se.Bear 1PC
6. Color:Anodized Red/Gold/Ti/blue/Black

   Anodized Compatible Shimano,Sram 8,9,10 Speed.