WobbleLight 400 Watt Metal Halide

Has anyone ever used one of these. The description says it gives off 40000 lumens and its cool to the touch. So would this be efficient for my use in a grow room? I am a beginner but i think i'd be able to have this thing really close to my plants if it wont burn my hands, im pretty sure it wont harm the plants. What do you guys think?

WobbleLight 400 Watt Metal Halide Self-Righting Worklight Model# WL400MH - SHOP.COM