Brand-new high-speed ball-bearings produced especially for XRAY. ID x OD x degree (mm) = 10x15x4. Number 2 pieces. Top-quality specialist ball-bearings for a super-free, super-smooth drivetrain. These highest quality ball-bearings are fitted with original plastic covers, and maybe they truly are degreased and gently oiled with AeroShell Fluid 12 oil for maximum smoothness, longevity, best limit 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 side covers are really simple to eradicate for fast and comfortable servicing. These ultra-high accuracy ball bearings are created to withstand all extremes at track under race conditions if you don't just enjoyable battle. A "must have actually" product!