1.Die-casting aluminium,with electro-static plastics spraying 2.E40,400w 3.Suitable for high bay lights 400W High Bay Lighting FittingFeatures:1.Die-casting aluminum , with electro-static plastics spraying2.E40 lampholder,400w3.Used for 16",19",22"reflector4.Main used as indoor lighting in industrial building, stadium and commercial market or other high-storey building etc.5. Pictures: