Iwasaki Electric self-ballasted mercury lamp BHF. This is a set of 5 lamps, 100/110V 500W. Since there are no peripheral devices, I cannot confirm if they light up at the moment. However, all 5 lamps were working properly before removal. These are discontinued products, so how about them as valuable spare lamps? Please understand that these are long-term stored items and that the lighting has not been confirmed. We will not accept any claims or returns.