New Bike Ceramic Pulley Rear Derailleur 12T 14T Guide Bearing Jockey

Feature: it is cnc machined by AL 7075-T6 round rod ,finished machined by diamond cutter,with diamond metal texture and good abrasion resistance index , it adopts imported Japanese steel bearing,rotating without  resistance ,it greatly decreased frictional resistance,and increased cycling efficiency, the design inreased bike derailleur shifting speed ,it causes no noice when shifting speed k and prevent bike chain falling . Size:12T,14T Acrew axis:Fit for 4/5 MM roller screw axis Body:   7075 aluminum alloy Diameter:50mm(12T),58mm  (14T) Bearing:ceramic bearing ,stainless steel shell , more durable Copper Bushing , Resistant Color:  red black blue gold  Green Apply for most of rear derailleur on the market Package: Narrow-Wide teeth Rear Derailleur pully *1 pcs Copper Adapter * 2 pcs(4mm,5mm) On Apr 17, 2023 at 00:45:25 PDT, seller added the following information:

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