Fresh high-speed ball-bearings produced specifically for XRAY. ID x OD x level (mm) = 10x16x4. Wide range of 2 pieces. Top-quality expert ball-bearings for a super-free, super-smooth drivetrain. These best quality ball-bearings are fitted with original plastic covers, and are furthermore degreased and extremely very carefully oiled with AeroShell Fluid 12 oil for maximum smoothness, longevity, greatest threshold and maximum performance.
These ball-bearings do have more (and bigger) balls in cage compared to the regular ball-bearings, making them far more resilient under lots. The medial component covers are now actually very easy to eliminate for fast and comfortable servicing. These ultra-high precision ball bearings are manufactured to withstand all extremes within track under race conditions and on occasion even simply fun battle. A "must have actually" device!