... 8mm-300mm width blue,white,yellow,black,polished Hardened and tempered steel stripMaterial: ck50,ck60,ck67,ck70,ck75, 50CrV4, 60Si2Mn,AISI420, ... , squarePacking: each bundle with anti-rust paper and light oil then wrapped in plastic film with metallic pallet and put ... , toughness, hardness and elongationGood tolerance for thickness controlledColoured Tempred steel strip 50CrV4 alloy spring steel trip