Besides manufacturing stainless steel balls (420C 440C Martensitic 302 304 316 Austenitic), we have built up our strength in manufacturing precision balls from materials such as low high carbon steel, brass, copper, nickel, aluminum, chrome steel, titanium, ceramic (silicon nitride Si3N4, aluminum oxide), tungsten carbide, platin-palladium, optical glass, single crystal, and jewelry stones. We have perfected our technologies to make miniature precision balls from diameter 0.1 mm to 3 mm at Grade 3~5. Ball ApplicationsOur quality balls have been used in precision applications such as miniature ball bearing, high speed spindle bearing, disk drives, micro-ball valves, photonics optical devices, medical devices as well as ball point pens, lighters, and jewellery. In particular, we are proud that our miniature high precision balls are used in high-tech data storage and transmission, and medical devices, and will continue to pursue product development in these areas. We only sell what we can measure precisely, and quality procedures used are consistent with the most stringent and rigorous industrial standards. We have a team of German experts who will gladly engage you regarding your customized specifications. Precision balls with diameters up to 120 mm, prototype quantity or scheduled mass production run can be manufactured upon request