Tungsten Filament(lamp filament)can be used in auto Lamp,is uniformity in pitch,shape,color,luster and piece weight, ... -standard filaments. They are widely used in incandescent lamp, energy-saving lamp, auto lamp, halogen lamp,GLS lamp and ... 110V-250V, 1,000-5,000 hoursFeatures:1) Uniformity in pitch, shape, color, luster and piece weight;2) ... ±3%mg5) Cold resistance: ±3%ohm Tungsten Filament,auto lamp