• Package contents: 600 steel balls, tweezers, and storage box. • Material: Corrosion and rust-resistant stainless steel. • Excellent assortment: 13 sizes from 2 mm to 10 mm. • Easy to use: Reduces friction and supports radial and axial loads. • Wide applications: Used in bicycle, motorcycle, car, furniture, and aerospace industry bearings. • Smooth and polished surface for long-lasting performance in tough environments.