Oust Bearings: MOC 7 Speed (set of 8) Unique bearing design allows for tighter tolerances beyond the ABEC scale. Out performs the best Swiss and ceramic bearings. Designed to handle torsional loads caused by carving, pumping, and four wheel slides and maintain speed. High Rockwell material hardness, and high surface polish for increased speed, performance, durability, and low friction. 2 Removable buna rubber seals for superior bearing protection and easier cleaning. MADE IN USA