This modeling bulb is a JDD type 250 watt / 120 volt glass enveloped quartz halogen bulb with a E26 Edison Standard screw-in base and frosted glass.
Fotodiox BULB-250W JDD Type 250 watt 120V E26 Frosted Halogen Light Replacement Modeling Bulb These bulbs are designed for the Fotodiox L, TS, M, H & YS series strobes. FeaturesFor Fotodiox L, TS, M, H & YS Series StrobesCompatible Lights:Fotodiox L, TS, M, H & YS Series StrobesItem Description:JDD E26 250W/120V Frosted Halogen BulbSpecificationsHandle: Bulb-250WColor Balance: Tungsten ~3200°KType: JDD StandardBase: E26 Edison Standard ScrewAvg Rated Life: ~ 2,000 hrWattage: 250 WattsVoltage: 120 VoltsWeight: 454 g.