300 Series S.S Steel Bar Grade: 302,304,321,316, ... ,310,314,etc. Size: 12mm~250mm Surface:Bright and oxidation 300 Series Stainless Steel Bar, Stainless WiresGrade: 302,304,321,316 ... our clients.For more detail, pls contact me asap.Regards! 300 Series Stainless Steel Bar