Complete set of high-speed, blue rubber-covered ball bearings for XB808 are utilized throughout the drivetrain for maximum drivetrain efficiency. All ball-bearings have the best tolerance and provide maximum performance. Ball-bearings the steering system are degreased and gently oiled with Aero Shell® Fluid 12 for maximum smoothness and endurance. All drivetrain ball-bearings have a unique high-temperature resistant grease to make sure appropriate lubrication. Highest-quality, individually measured, chosen and inspected bearings manufactured considering XRAYs highest tolerance specifications. Set of 24.