... . black fnished, HRC45-48 3. excellent flexibility harden and tempered high carbon steel Steel Grade: 65MN C50 c75Size: thick: 0.3-2.5mm wide ... edge, HRC45-48Packing: sea-worthy packingApplication: shutter door, spring, band saw, puty kinfe, trowel, spring wahser etc. Ms.zoediaMobile: 0086 159539 ...