... >OEM 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 steel ... , extension/tension spring, steel spring, hook spring, furniture spring, industrial spring, car/vehicle spring, auto spring, machine spring,wire spring ...