Die-cast Aluminum Enclosure. 111x60x30. Supplied unpainted with lid and four self-tapping screws. NOTE: This enclosure is supplied with self-tapping screws. The action of driving the screw in will result in the self-tapping screw cutting a thread into the material and securing the lid and base of the enclosure. We recommend using a screwdriver with the correct size and shape Phillips head to screw in the self-tapping screws