... :ACME Thread Rod 2.Meterial:Carbon Steel,Stainless Steel 3.Size:M3-M100;1/4"-4" 4.Certificate:ISO9001:2008 1.NameACME Thread Rod2 ... .standardDIN, ASTM,JIS,BS,AS,ISO,GB,Nonstandard bolt(according to your order),etc3.MaterialCarbon Steel, Stainless Steel4 ... should be according to your order); NE-54 45#/Stainless steel acme thread rod with single/many star