If you're in the market for a high-performance bearing, the Alkali ABEC 9 Bearings will take you to top speeds. Coming in a pack of 16, you'll be able to replace the bearing on 8 wheels total. Crafted from stainless steel, these ABEC 9 bearings are pre-spun to help reduce the break-in time, and come in the standard 608 size. Pack of 16 - Perfect amount to replace bearing on two full skates with four wheels each. Stainless Steel - Highly-durable, pre-spun components for pro-level skating.