Review on 💛 High-Quality 11T Aluminum Sealed Bearing Jockey Wheel Bicycle Guide Roller Rear Derailleur Pulley in Striking Red and Yellow Shades by Isaac Maze

They are light and well made, the chain clearance on my 11 speed road bike was good. I wanted to replace the original plastic bearings (brass bearings) with a ball bearing. The assembly of the Campagnolo Centaur rear derailleur was a bit tricky at first, the aluminum caps were a bit thicker. I went ahead and put them on and they fit well. Pilot bearings came out dry, I highly recommend adding some lithium grease before installing. All in all, it worked very well and you can't beat the price.