self tapping screw Size:ST2.2-ST6.3 Material:Carbon /Stainless Steel Standard:DIN, ANSI, ISO self tapping drywall screw1.Size:ST2.2-ST6.32.Material:Carbon /Stainless Steel etc.3.Standard:DIN, ANSI, ISO .4.Finish:zinc plated, plain, H.D.G. head colored dacromet etc.5.Thread:AB type, A type.6.Package:small plain box or bulk packed in carton.If you have any question, pls feel free to contact us, ...