ABEC-9 RATING: The higher the rating, the better the accuracy and efficiency, and our rating is at the top end of the spectrum. Our ABEC-9 accuracy rating allows for high-performance use and smooth rolling. MULTIPLE USES: Ideal for skateboards, longboards, scooters, roller skates, and inline skates. These bearings are compatible with any size wheel and also suitable for various rolling toys. STYLISH DESIGN: Each ball bearing features two low-friction single-lip blue rubber seals. Finished with a sleek red metal design to enhance the look of any wheel. ALL WEATHER: These bearings are waterproof, dustproof, and dirt resistant, designed to maintain performance in various conditions. CONTAINS: 16 pcs x Black Skate Bearings - Classification 608RS with a core diameter of 8 mm, outer diameter of 22 mm, and width of 7 mm.