600 Precision Stainless Steel Balls in 12 Sizes, 1-8mm Metric Bicycle Bearing Balls, Combination Set, Stirring Balls This combination set contains 12 precision steel balls in the following specifications: 90 balls of 1mm diameter, 80 balls of 2mm diameter, 80 balls of 2.5mm diameter, 50 balls of 3mm diameter, 50 balls of 3.5mm diameter, 50 balls of 4mm diameter, 50 balls of 4.5mm diameter, 30 balls of 5mm diameter, 30 balls of 5.5mm diameter, 30 balls of 6mm diameter, 20 balls of 7mm diameter, and 20 balls of 8mm diameter. Made of 304 stainless steel, these balls are uniform in size, highly wear-resistant, highly precise, with a smooth, burr-free surface and an attractive appearance. Widely used in automotive parts, motorcycle and bicycle bearings, wheels, drawer slides, and other fields. They can also be used as stirring balls for mixing paint, nail polish, etc. A small amount of grease is applied to the surface to reduce friction during bearing rotation and prevent corrosion and rust. Reduce damage to the machine and extend its service life. Storage box. Steel balls are sorted by size and stored in different compartments of the box. Easy to identify and store. Note: Due to different production batches, the style of the plastic box is random. Color: Silver. Material: Stainless steel. Dimensions: 10.01 x 3.99 x 1.30 cm. Package contents: 600 x 12-inch precision stainless steel balls. Includes only the above package contents; other products are not included. Note: Light reflection and different monitors may cause the color of the product in the picture to be slightly different from the actual product. The measurement error is ±1-3 cm.