1.2.5mm Spring 2.Material: 45#,60#,65#,C70DA,C82DA,70#,80#,72A,72B,82B ... GradeGB StandardCarbon%Silicon%Manganese%Phosphorus%Sulphur %Chromium%Nickel%Cuprum%45#0.44-0.460.20-0.230.57-0. ... 1.9mm,2mm,2.05mm,2.1mm,2.15mm,2.2mm,2.25mm,2.3mm,2.4mm,2.5mm,2.6mm,2.75mm,2.8mm,2.85mm,2.95mm,3mm,3 ... Office BuildingMachine Of Our FactoryOur Spring Products 2.5mm Spring Of Grade 45(45#,60#,65#,C70DA,C82DA,70#,80#,72A ...