Original high-speed ball-bearings produced especially for XRAY. ID x OD x depth (mm) = 6x10x3. Couple of 2 pieces. Top-quality specialist ball-bearings for a super-free, super-smooth drivetrain. These cost effective ball-bearings are fitted with unique artificial covers, and are also in addition degreased and carefully oiled with AeroShell Fluid 12 oil for maximum smoothness, longevity, best restriction and maximum performance.
These ball-bearings have more (and bigger) balls inside cage compared to the regular ball-bearings, making them more resilient under lots. The within covers are actually very easy to eliminate for fast and comfortable servicing. These ultra-high accuracy ball bearings are created to withstand all extremes within track under competition conditions and simply enjoyable competition. A "must have actually" item!