Accessories Bike Rear Derailleur Bicycle Rear Pulley Bike Ceramic Bearing Guide Bike Jockey Wheel

Label:Yes Fit for: 7/8/9/10/11 Speed Bike Body material: 7075 aluminum Zinc Zinc Zinc Zinc Alloy body + Stainless steel shell + ceramic bearing Ball Diameter of middle hole: 6mm/0.24in Specification: 10T / 11T / 12T / 13T / 14T / 15T / 16T/ 17T Inner diameter of two derailleur tube: 5mm/4mm (generally, a derailleur tube is inserted into the guide wheel by default) Axis: Stainless Steel Shell , Ceramic Bearing Ball Application: compatible with most Rear Derailleur on the market Product color: Red / Black /Multicolor / Blue Package:1PC Rear Derailleur Pulley+2 PCS Sleeve Tubes( 4mm ,5 mm)

Feature: 1. High strength aluminum Zinc Zinc Zinc Zinc Alloy, CNC processing, enhance the durable strength; 2. Deepen the tooth mark: can effectively reduce the situation of chain off, more clear speed change, more stable on the chain.