... . Wire size: 0.2-8.0mm Surface: Brigth, Dull Stainless steel spring wire:Application: SpringsSteel grade: 302, 304, 316, 201CU, etc ... , coils in wooden box A. Item: Stainless steel spring wire B. Advantage:Stainless steel wire has a good ductility, high tensile strength ... , abrasion resistance and corrosion resistance, uniform diameter, smooth surface, bright color, ect.