Sell MUQZI Bike 11T 13T Ceramic Bearing Jockey Wheel Rear Derailleur Guide Roller MTB Road Bicycle Aluminum Alloy Pulley Idler best price

MUQZI 11T 13T Rear Derailleur Ceramic Jockey Wheel Specification: 11T / 13T Material: 6061 Aluminum Alloy + Ceramic Ball Color: Black Red Gold Blue For: 4/5/6 MM Rear Derailleur Screw Suitable For Most Rear Derailleur On The Market, Support 7/8/9/10/11 Speed Tip: Please Choose The Same Size As The Original Pulley. If They Are Not Exactly The Same, Choose a Smaller Type, And Don't Choose a Type That Is Larger Than The Original Type. (There Are More Specifications In The Store) Features: 1. Ceramic Ball Bearings Are Used Inside The Product, Which Have Excellent Performance That Metal Bearings Can't Match, Such As High Temperature Resistance And High Strength. 2. The External Use Is 7075 Aluminum With The Best Strength Of Aluminum Alloy, Which Is Corrosion Resistant And Lightweight