Replacement or spare E27 250W modeling lamp for use with Bowens monolights on 117V (Americas) power supplies. Compatible: Gemini GM200 Gemini 200Rx Gemini GM400 Gemini 200Rx Gemini Classic 250C Gemini 250R Gemini Classic 500C Gemini 500R Gemini 500Pro Gemini 750Pro Older style Bowens Esprit 125, 200, 250, 500 and 750Ws units are also compatible with this modeling lamp.