... : stainless steel 2.Size: 0.3-50.8mm 3.Grade:G10-G1000 Product Name: stainless steel ball1.Material:201,302,303,304 ... ,440,440C stainless steel2.Size:0.3-50.8mm3.Grade: G10, G40, G60, G100, G200, G500, G10004.Surface Treatment:polish5.Package ...