Streamlight 45901: Replacement 8 Watt Bi-Pin Halogen Bulb. Fits Litebox or Vulcan lanterns. This bulb will burn brighter in Vulcan but battery will deplete faster than Vulcan 3 watt bulb. This bulb inserts into the new style reflector lamp. You only have to replace the bulb at a lower cost compared to the old sealed beam lamps. DO NOT DISCARD your new style lamp reflector and bulb holder. Unscrew the bulb holder, and replace the Bi-Pin bulb only.