Excellent quality, low cost indoor grow light combo. Start with a brilliant Sunlight Systems smooth aluminum reflector with V-shaped hangers, 15 ft power cord and a mogul socket (reflector & socket are compatible with MH or HPS HID lights from 250W to 1000W). Pair this with a 'next-gen' 600W magnetic ballast, smaller and lighter than traditional, 120V/60Hz or 240V/50Hz auto-switching, and compatible with either a metal halide (MH) or high pressure sodium (HPS) lamp. Choose either lamp bulb to complete the combo.