2xBicycle Rear Derailleur Pulley Jockey Wheel 12T For-SRAM XX1/XO1/X1/GX/11Speed

Model: 12T. For ZTTO Bike Chain Tensioner MTB Bicycle Single Speed Chainring Jockey Wheel. Narrow wide Jockey Wheel. 2 x Jockey Wheel. Pac kage Includes Colour: Black (As Pictures Show). Material: Plastic.

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