These 2 pulleys are CNC machined from 6061-T6 aluminum, with a high quality anodized finish that will not discolor over time. They have a continuous external surface so the are easy to clean and prevent debris from jamming up their rotation. They have high quality sealed bearings, and come with external dust shields that maintain a small air gap to the pulley to keep contaminants away from the bearing seals.
Compatibility: All Madrone and SRAM derailleur cages, and 12 and 11 speed chains. The maximum width of the pulley bearing with dust shields is 7.6mm.
