1/2set MTB Road Bike Ceramic Pulley Aluminum Alloy Rear Derailleur 11T/13T Guide Cycling Bearing Wheel for 4/5/6mm roller screw

LEBYCLE 11T 13T Mountain Bike Rear Derailleur Pulley Guide Roller Bicycle Steel Bearing Jockey Wheel Cycling PartsFeature:1. Aluminum alloy high-strength shell: It is made of high-strength aluminum alloy and machined to improve durable strength;2. Deepen the tooth marks: It can effectively reduce the chain drop, the speed change is clearer, and the winding is more stable.Specification:Main body material: 7075 aluminum alloy main body + steel bearingProduct color: red/blackSpecifications: 11T/13TProduct pasize: about 91x68x9mmProduct net weight: about 10g/11gDiameter of middle hole: 6mmThe inner diameter of the two reducing sleeves: one with an inner diameter of 5mm, and the other with an inner diameter of 4mm (generally, one reducer sleeve is installed in the guide wheel by default)Applicable: Compatible with most rear derailleurs on the marketGuide wheel selection principle:1. It is preferred to use the same size as the guide wheel; if there is no same, you can choose a smaller than the guide wheel, but you cannot choose a larger one;2. There is no distinction between the guide wheel and the tension wheel, but the size of the guide wheel and the tension wheel of some rear derailleurs are different, and they can also be repd with the same size, and the length of the chain needs to be readjusted.Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.1x rear derailleur guide wheel2x reducing sleeve (generally a reducing sleeve is installed in the guide wheel by default)