... 1) Re balls: chrome steel, stainless steel (SUS420J2, AISI304, AISI316, AISI316L, AI Features:1) Re balls: chrome steel, stainless steel (SUS420J2, AISI304, AISI316 ... ,AISI316L, AISI440C, AISI430), carbon steel (AISI1015, AISI1085) from G10 to ... rollers and needles, we mainly supply chrome steel in G5, G3, G2 bearing Balls