1pc Mountain Bike Transmission Rear Shift Guide Wheel Ceramic Peilin Guide Wheel 11T Tooth Aluminum Alloy Tension Wheel

Explanation: 100% brand new and high-quality Product: bicycle rear Derail pulley Size: 11T Structure: Bearing Material: 7075 aluminum alloy Diameter: 4.34cm/1.71in 4/5/6mm spindle roller setting Suitable for most rear transmissions on the market, supporting 7/8/9/10 speeds Bicycle transmission, ceramic bearings, durable Gold/Blue/Black/Red/Silver Quantity: 1 This package includes: 1 ceramic bearing for bicycle pulley 2 attachments