Engineered with exacting Swiss craftsmanship and premium materials, the ANDALE SWISS BEARINGS SINGLE SET caters to skaters seeking top-tier speed, endurance, and smoothness. These bearings are made from high-carbon chromium alloy steel races, precisely machined and polished to minimize friction, enabling faster acceleration and increased top speeds. Featuring Grade 5 chrome balls with an exceptional 5-micron spherical tolerance, they reduce internal wear to optimize performance. Pre-lubricated with a synthetic oil blend, they resist corrosion and wear. A single non-contact rubber shield ensures minimal drag and easy maintenance, while a robust nylon ball retainer enhances durability to endure daily skating rigors. Each set includes eight bearings, enough to outfit all four wheels for a professional-grade experience.