Commodity: cold drawn steel fiber Place of origin: liaoning, china (mainland) Brand name: harvest Model number: w-430/20/50he Material: stainless steel Length: 20mm Diameter: 0.5mm Aspect ratio: 40 Tensile strength: 1250mpa-1450mpa Application: for tougher, longer-lasting concrete strength Standard: astm a820 Color: metallic-grey Cross section: circullar