This is the 250 Watt Halogen lamp. It is a Low voltage bulb without reflector. This is mainly for projection, microfilm, microscopes, and stage & studio lighting. The EHJ bulb is most common because of its small size, high CRI, and brightness. Platinum's EHJ lamps, which are replacements for HLX 64655 and other EHJ bulbs, feature the same quality and performance of the bulbs of leading manufacturers but at lower prices, so save on your bulb needs today.