These ball bearings are constructed from high-quality steel. They are a great addition to your rc car, fishing reel, bike and other applications. Perfect for beginners and advanced enthusiasts alike, they guarantee a smoother and more stable ride. These bearings are built to last and provide excellent performance. The sealed steel bearing style ensures durability and longevity. These ball bearings are must-have for anyone who wants to take their ball-raced equipment performance to the next level. Get your hands on these Steel Ball Bearings today!