Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

100% brand new.Alluminum alloy materialAnti rust / corrosion resistant anodized Suitable for upper / lower pulley Compatible with Shimano and SRAM Material: CNC 7075 alumium alloy Size: 11T Inner diameter: 5mm or 6mm Specification:Model Number: A-11Type: Jockey wheel rear derailleur pulleyMaterial: Aluminum alloySuitable for : BikeColor: RedSize(inch): 11TProduct size (L x W x H) : 4.2 x 4.2 x 0.5 cm / 1.7 x 1.7 x 0.2 inchesPackage Contents: 1 x Aluminium Jockey Wheel Rear Derailleur Pulley