100 watt Quartz standard lamp for Photogenic PowerLights PLX1000, PLX500, PLX2500, PLX1250, PL1250LH, PL750, PL375, PL06, Advantage Heads PA8, PM2A, FM2A, PhotoMaster PM12, PM11 heads along with StudioMax III AKC160, AKC160B, AKC320 and AKC320B heads.