Couldn't use sadly as it didn't fit. The ceramic has absolutely stunning performance. Tried to spin it freely and lasted about 45 seconds! New never used but with no box
WHEELTOP EDS TX Electronic Groupset + Ceramic Oversized Pulley Cage Combo
Oversized Derailleur Pulley Cage for Shimano R9200 R8100 R8000 SRAM RED FORCE
Absolute black carbon hollovcage oversized derailleur for Shimano Ultegra 8100
Garbaruk for SRAM 11/12 Speed Rear Derailleur Pulley 12T + 16T Ceramic Rear Derailleur Pulley (Black Cage)
Toopre 11T Anodised Ceramic Bearing Derailleur Jockey Wheel Pulley Ultra Smooth
