... in Tungsten Filament(Filament,lamp parts) can be used in Incandescent Lamp, fluorescent lamp,anti-shock lamp,energy-saving lamp, auto lamp, halogen lamp and other special lamps ... :1) Single-coil: 36V-250V, 1,000-5,000 hours2) Double-coil: 110V-250V, 1,000-5,000 hoursFeatures:1) Uniformity in pitch, shape ...