Mi.xim 14t Mtb Bicycle Rear Derailleur Jockey Wheel Silver

100% Band new and high quality.Suitable for 7-12 speed bicycle chain, suitable for 4/5/6mm idler screw.All the results of the simulations and the experimentations indicated that the ceramic ball bearings' performances are very good, especially in the low load and high-speed environment.Hollow-out design, which can effectively discharge the sand, dirt, etc. on the bicycle chainHigh Wear-resistant and excellent durability.Colour:silverMaterial:Aluminum alloy + ceramic bearingSize:Diameter: about 59mm, thickness: 8mmPackage Contents:1 x Bicycle rear derailleur guide wheelOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.