https://shop.miniatureaircraft.de/0298-Machined-Delrin-Bearing-Cups-Pack-of-2_1
0298 Machined Delrin Bearing Cups - Pack of 2, $ 2.73
0298 Machined Delrin Bearing Cups - Pack of 2 (MA0298) - miniatureaircraftusa.com
bearing cupsmachineddelrinpack
https://www.cyclomonster.com/components/gears-drivetrain/shimano-bb-r9100-hollowtech-ii-68-mm-english-thread-bearing-cups__12220
Shimano BB-R9100 HollowTech II 68 mm English Thread Bearing Cups
The bottom bracket bearings for the hollowtech ii fcr9100 crankset, which is the ultimate crankset for stiffness whilst keeping weight low for performance...
bearing cupsshimanobbiimm