This is a set of 72 Ushio brand HPL375w 220v lamps, designed for use in Source Four Lekos and Pars. They are compatible with OSRAM brand equipment and are of the type "lamp bulb". The voltage is rated at 220V and the power is 375W. These bulbs are perfect for use in film photography, slide and movie projection, and in cameras and photo equipment. They are high-quality and reliable, made by a trusted brand in the industry. If you're in need of replacement bulbs for your equipment, these Ushio bulbs are an excellent choice.