Photogenic C4-15 Flashtube for PowerLight PL300DR, PL500DR, PL1250, PL1250DR, PL1250LH, PM2A & FM2A Flash Units. (C4-15) Fits PL06, PL1500, PL1875, PL1250, PL1250DR, PL300DR, PL500DR, PL1250LH, FM2A, PLX1250, PLX500DR, PM2A