Grade 5 Ceramic Bearings
11T/5mm Upper/Lower
Enduro Ceramic Rear Derailleur Pulleys Website: (Click)
Fits:
SHIMANO ROAD
AND MOUNTAIN (9 and 10 Speed)
SRAM ROAD (9 and 10 Speed)
SRAM X0 AND XX (9 and 10 Speed)
CAMPY 11-TOOTH APPLICATIONS
Includes Everything Pictured and listed. Installed, tested, and removed. They work great, but my derailleur had other problems.
1879.SP. Enduro Ceramic Rear Derailleur Pulleys Shimano 18 g (Pair)