FENGIA MTB 13T 14T 15T Jockey Wheel Jockey Wheel Transmission Accessories Rear Derailleur Bike Rear Derailleur Bicycle Rear Pulley Bike Jockey Wheel Bike Ceramic Bearing Guide

Diameter of middle hole: 6mm/0.24in Body material: 7075 aluminum alloy body + Stainless steel shell + ceramic bearing Ball Axis: Stainless Steel Shell , Ceramic Bearing Ball Fit for: 7/8/9/10/11 Speed Bike Product color: Red / Black /Multicolor / Blue Application: compatible with most Rear Derailleur on the market Package:1PC Rear Derailleur Pulley+2 PCS Sleeve Tubes( 4mm ,5 mm)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) Feature:

1. High strength aluminum 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.