... spring from 8mm-16.00mm.2.Applications: Automotive, medical device, electronics, 3.60Si2MnA, 55CrSi and other material alternative 4.surface treatment ... treatmentpolishing, anodizing, zinc plating, nickel plating, etcTypeCompression spring,Auto spring,others.Applicationauto, toy, electronics, medical device, motorcycles, furniture, bicycles, sofa, etcFeaturehigh accuracyDemensionscustomizedShipment ...