Material:stainless steel ball, size:0.1--12.7mm,grade:G5-G1000 packing:bulk industries packig and small packing 1)bearing ball Material: ... Carbon steel ball, size:1.588--40.1mm,grade:G40-G1000Material ... :Chrome steel ball,size:7.144--15.875mm,grade:G16--G40Material: Stainless steel ball(304,316,316L,420,440 ...