... and ODM 3>EXW price & strictly quality control Steel drum spring manufacturerFeatures: 1) Wire Diameter: 0.08~ 10 ... .0mm 2) Type: compression drum spring. 3) Main material: carbon spring steel, alloy spring ... used in automobiles, motorcycles, electrical appliances, telecommunication, craft, toys ,locks,stationery,furiture ,washing machines,vacuum cleaners,lamps and lanterns ...