Product information: Voltage: 12V Wattage: 5,10 or 20W Pin spacing: 4.0mm Pin Length: 8.0mm Total Length: 30.0mm Bulb Diameter: 8.0mm Contents in Box: 2/4/6/8/10 x Bulbs More information about product: The bubble is filled with high-purity halide to inhibit the evaporation of the tungsten wire. The bubble does not blacken, the light decays slowly, and the axial filament is kept for a long time, which can produce high central light intensity and good concentrating performance. With reflective lamps, it can control the illumination angle more effectively; any lighting position is more widely used. Isolation of ultraviolet light, low pressure less than 2.5PA, enhance the protection of the object being illuminated, the lamp does not need front glass.