... 5>Factory direct sale. Specifications of led bulb light1>Die-casting body, ceramic base 2>High lumen output,310lm for white3>2 ... ,5500-6000K6,Super reliability,pass 4000v hi-pot test7.High lumen output,310lm for white,equivalent to 40w incandescent8. ... insulation and heat dissipation9.CNC machined aluminum housing,better thermal dissipation than die-cast aluminum housings10.Lifespan:50,000hrs11.No UV ...