This is the Philips tungsten Halogen light bulb. It works with 150 watts and 24 volts. This bulb does not have a reflector. It has a common G 6.35 2 pin base. This lamp has a T4 shape and a rated life of 50 hours. Applications •Dental•Fiber Optic•Medical•Microscope•Projection•SurgicalFeatures •Single Ended Lamp•Low Voltage Bulb•Replacement for ZB-FCS•Examination & Operating•Illuminator•X-Ray Collimator•Surgical Operating Room