Fresh high-speed ball-bearings produced specifically for XRAY. ID x OD x depth (mm) = 10x16x4. Number of 2 pieces. Top-quality professional ball-bearings for a super-free, super-smooth drivetrain. These highest quality ball-bearings are fitted with exclusive plastic covers, and tend to be additionally degreased and very carefully oiled with AeroShell Fluid 12 oil for maximum smoothness, longevity, greatest threshold and maximum performance.
These ball-bearings have significantly more (and bigger) balls in cage set alongside the regular ball-bearings, making them far more resilient under lots. The medial component covers are actually easy to eliminate for fast and comfortable servicing. These ultra-high accuracy ball bearings are manufactured to withstand all extremes within track under racing conditions and sometimes even simply fun battle. A "must have really" device!