Brand new high-speed ball-bearings produced specifically for XRAY. ID x OD x level (mm) = 5x12x4. Set of 2 pieces.
Top-quality specialist ball-bearings for a super-free, super-smooth drivetrain. These best quality ball-bearings are fitted with unique synthetic covers, and are usually frequently degreased and very carefully oiled with AeroShell Fluid 12 oil for optimum smoothness, longevity, most readily useful limitation and maximum performance.
These ball-bearings have more (and larger) balls inside cage versus regular ball-bearings, making them more resilient under lots. The within covers are really a facile task to expel for simple and easy fast maintentance.