BOX 1-10mm High Precision Bearing Balls Smooth Ball Box Set 304 Stainless Steel. Product Name: Steel Ball. Material: 304 stainless steel. Features: Good rust and corrosion resistance. Application: 304 stainless steel ball is the most widely used steel ball on the market. It can be used in medical equipment, chemical, aviation, aerospace, plastic hardware, perfume bottles, sprayers, valves, motors, switches, electric irons, washing machines, refrigerators, air conditioners. Auto parts, bearings, instruments, bottles, electronic components, jewelry polishing and other fields. Small Ball (1mm-4.763mm). If you are not satisfied with the item, please contact with us. Any problem, please feel free to contact with us. We will reply you within 24 hours. For the functional products in our shop, we make sure that the functions are the same as description, but the actual color and shape may looks a little different from pictures becaUKe of the technical improvement and manufacturing variance.