- Bicycle specific ceramic cartridge bearing for low friction spinning
- Specification and quality matches original bearings selected by the engineers at the world's leading bike brands
- Nylon retainer, CrMo races, Si3N4 Silicon Nitride (HRC 75-89) ball bearings
- Tolerance ABEC-5
- Rubber LLB (non contact) Seals
- Multemp PS2 (Kyodo Yushi) Grease
