1.4mm Spring 2.Material: 45#,60#,65#,C70DA,C82DA,70#,80#,72A,72B,82B. 3. ... absorbers 4.Best price 1. Product Name: 4mm Spring Of Grade 452. Material: Steel GradeGB StandardCarbon%Silicon%Manganese%Phosphorus%Sulphur %Chromium%Nickel ... ,11mm,12mm.Our Factory And Office BuildingMachine Of Our FactoryOur Spring Products 4mm Spring Of Grade 45(45#,60#,65#,C70DA,C82DA,70#,80 ...