Twincam ILQ-9 Pro bearings elevate skating speed with cutting edge components. 6-ball bearing design improves speed, holds larger loads and creates less void for a smoother spin. SCRS (S-Channel Rubber Shield) prevents contaminates from entering the bearings. The TK racing gel (Made in the USA) lubricates the bearings for an extremely fast ride. Includes 16 bearings and 8 spacers in a reusable storage box