ROBERTSON 3P10065 Individual mHID, CWA, 250 Watt, M58 Metal Halide Lamp, 120/208/240/277Vac, 60Hz, Normal Ballast Factor, HPF, Model CMH0250H04932 M (Replaces CMH0250H04932) Equivalent to Philips-Advance 71A5770 , Osram M250/Multi-Kit, Keystone MH-250A-Q-CA Equivalent to Fulham HHMHMLT4250D Offering the broadest ballast/LED Driver line available on Amazon. Take advantage of Robertson's 60 years of electronic design and quality manufacturing experience. Go to RobertsonDirect.com for complete technical data.