If the outer ring rotates, there is a risk that the grease will leak from the bearing at high speeds.
BEARINGS 6800 To 6805 2RS SERIES RUBBER SEALED THIN SECTION PLEASE CHOOSE SIZE
6700 2RS Series Thin Wall Bearings 61700 - 61710 2RS
6800 2RS Wheel Bearing
Rotor 50T Qarbon Oval Chainring 110 BCD Shimano 6800/9000 series
Shimano Ultegra 6800 Rear Bicycle Bike QR Quick Release Skewer
SKF 61902 6902 2RS MTF9 Bike Specific Hub Bearings Pair 15x28x7mm New Unused