... 50.8mm 3.Grade:G10-G1000 Product Name: stainless steel ball Specification1.Material:201,302,303,304,316,316L,420 ... ,440,440C stainless steel2.Size:0.3-50.8mm3.Grade: G10 ... :all kinds of machines,hardware,bearing,wheel,caster slider,bicycles,thrust bearing,etc7.Transport:by ship8.Delivery ... If you are interested in our stainless steel ball,pls feel free to contact me.