About our polyester wire,i will give you the following introductions: Diameter:1.00mm-5.00mm,and the normal diameters are 2.0mm 2.2mm 2.5mm 3.0mm 3.5mm and 4.0mm Color:usual colors are black and white Shapes:usually round shape,it will be the square shape if it is used for PET strapping wire Package:we can pack them in 10kg spool,20kg bulk package and 250kgs iron spool package Sample:available OEM:available Feature:high tensile strength,even fineness and smooth surface,acid and alkali resistance,UV resistance