'Music Wire, Type 302 Spring Tempered, Full Hard, Stainless Steel, Wire Gauge Number 12 American S & W Music Wire Gauge, Min. Tensile Strength (PSI) 285, 000, Total Length 446 ft., Package Type Dispenser Box, Thickness 0.029 In. / 0.737mm, Feet per Lb. 446, Thickness Tolerance +/-0.0005 In., Application For Springs, Wire Forms, Control Linkages, Armature Binding, Ceramic Cutting and a Variety of Industrial Uses, Pack Count 1, Meets/Exceeds ASTM A555, A313, and A580, AMS 5688, Package Weight 1 lb.'