New high-speed ball-bearings produced specially for XRAY. ID x OD x depth (mm) = 10x15x4. Number of 2 pieces. Top-quality expert ball-bearings for a super-free, super-smooth drivetrain. These highest quality ball-bearings are fitted with unique rubber covers, plus they are degreased and lightly oiled with AeroShell Fluid 12 oil for optimum smoothness, longevity, best tolerance and optimum performance.
These ball-bearings do have more (and larger) balls within the cage versus regular ball-bearings, making them more resilient under lots. The medial side covers are easy to eliminate for quick and comfortable servicing. These ultra-high accuracy ball bearings are created to withstand all extremes at track under racing conditions if not just enjoyable battle. A "must have" product!
