... -300mm 2.hardness:30-55HRC 3.polishing,colored 4.slited/rounded edge Hardened and tempered steel stripAttributes1.Catalogue:carbon steel strip,spring ... to 55HRC7.Surface:polishing,blue,grey-blue,yellow,nature,etc8.Edge:rounded,slited9.MOQ:5 tons10.Remark:all of the attributes are ...