Music Wire, Carbon Steel Alloy 1085, Min. Tensile Strength (PSI) 350,000, Package Type Dispenser Box, Thickness 0.020 in / 0.508mm, Feet per Lb. 937.0, Application For Springs, Wire Forms, Control Linkages, Armature Binding, Ceramic Cutting and a Variety of Industrial Uses, Pack Count 1, Meets/Exceeds Meets ASTM A228