The steel balls with material like AISI 1010/1015/1045/1085 carbon, AISI 52100 chrome, and AISI 302, 304, 316 stainless steel produced by our company are complete in specifications and made according to GB308-89 and ANSI/AFBMA standard of U.S.A.. Our products???precision can range from grade 100 to grade 1000. Therefore, it is the ideal auxiliary products in aerospace industry, automobile, motorcycle, manufacturing industry, bearing, medical equipment, instruments, and precise instrument, etc. We are confident in assured quality, delivery and competitive prices to serve your needs.