The Elinchrom Modeling Lamp - 100 watts/90 volts - for EL250, EL250C Monolights is a very useful and a good quality product by Elinchrom. 100W, 90V frosted, incandescent modeling light bulb for Elinchrom EL250, EL250C monolights, or any other lighting fixture that accepts an E27 medium screw base incandescent bulb.