8 Skateboard Extended Bearing - Built-in Spacers608RS Skateboard Bearings with Extended Inner Race 8x22x7mm (13mm Inner Race) Set of 8 These 608RS extended inner race bearings are built specifically for skateboards, longboards, and inline wheels. With a 13mm inner ring, they eliminate the need for separate spacers, offering a smoother, stiffer ride and easier installation. Made from chrome steel and sealed on one side, theyre designed to resist dirt while delivering long lasting performance.