New high-speed ball-bearings produced specifically for XRAY. ID x OD x degree (mm) = 10x15x4. No. 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 maybe they truly are degreased and carefully oiled with AeroShell Fluid 12 oil for maximum smoothness, longevity, most readily useful limitation and optimum performance.
These ball-bearings have significantly more (and bigger) balls into the cage versus regular ball-bearings, making them more resilient under lots. The medial part covers are actually an easy task to eliminate for fast and comfortable servicing. These ultra-high precision ball bearings are made to withstand all extremes at track under battle conditions if you don't just enjoyable battle. A "must have in fact" device!
