Wide Application Our precision steel bearing balls are suitable for use in bearings, airplanes, motors, bicycles, motorcycles, automobiles, light rails, furniture, drawer slides, door locks, and various other applications. Easy to Carry The storage box features built-in partition spaces that prevent rolling and help keep different sizes separated. This practical and portable storage solution makes it easy to organize and carry bearings. Ideal for keeping spare bearings on hand for bicycles or other equipment. Meet Your Different Needs This set includes 510 high-precision bearings in 11 different sizes, designed to cover most common bearing requirements. Perform repairs at home without needing to visit a repair shop, helping save time and effort. High-Quality Material All bearing balls are made from high-quality stainless steel, ensuring durability and resistance to rust. The spherical surface is polished to a smooth finish, free from cracks, burrs, and debris. Applying lubricant can enhance performance, improve smoothness, and provide additional protection against corrosion. 510PCS 11 Sizes Steel Balls A comprehensive set of 510 high-precision steel bearings in 11 sizes, ideal for a wide range of everyday applications. Keep replacements readily available and handle common repairs at home with ease. Easy to Carry The durable storage box includes internal compartments to prevent movement and mixing of sizes. Its compact and organized design ensures convenient transport and access. High-Quality Material Constructed from high-quality stainless steel for strength and long-term rust resistance. Smooth, polished surfaces ensure reliable performance. Regular lubrication helps maintain efficiency and extend service life.