AURORA 's Mission: Covering the whole world with most beautiful light.Feature of semi truck led light bar led light bar:Reflector patterns available in spot, flood, combination or bat beam Packing Photos2'',4",6",8",10",20",30",40",50" more size are availableTesting DVYoutube: http://youtu.be/IXw-8Ad1sm0Youku : http://v.youku.com/v_show/id_XMzkxMjc3NTky.htmlSuper Brightness High press Waterproof Dust proof Impact proofWabble proof HCL, Seawater proof Burn with PetrolProduct CertificationCE, Rohs, IP68, UV, High Temperature, Low Temperature, Salt Fog, Vibration Product Application Product Comments from our customerContact me