... wire diameter from 0.1mmup to 12mm. Material : stainless steel, spring steel, zinc plating steel, carbon line, etc.Spec: supply the ... , chrome plating, zinc plating, etc. Applications: electronic toys, remote control, calculator, charger, cell phone, battery boxes, telephones and so on.Packing ... : strong flexible, easy to use, high quality, best price. Torsion Spring