... :ISO 9001:2008/SGS test report/ROHS report Stainless steel ball Name: Stainless steel ballsMaterial: AISI304,316,420C,440CSize: 0.8mm-150mmGrade: G10 ... max0.03 max10.0-14.016.5-18.52.00-2.50AISI420C0.40-0.501.0 max1.0 max0.04 max0 ... and bearings).OUR MAIN PRODUCTS:Stainless steel ball:AISI302,304,316,420,4440CBearing steel balls:AISIE52100Carbon steel balls:AISI1010,1015,1045,1085Steel shot:S70 ...