... 08~ 3.5mm 2) Type: compression Electronic appliance spring. 3) Main material: carbon spring steel, alloy spring steel, refractory, steel, stainless steel, ... electrical appliances, telecommunication, craft, toys ,locks,stationery,furiture ,washing machines,vacuum cleaners,lamps and lanterns,bicycles,sports equipment ,etc12)packing ... B. outer packing: Several polybag in one carton. Electronic spring