Molded in polypropylene, these sturdy boxes contain both a lift-out tray plus additional storage in the lid area. They feature two convenient compartments right in the lid of the box, so that the lid does not have to be opened to access smaller items. The base of each box has maximum storage space for bulk supplies. The handle is “over molded” for added comfort in carrying. The boxes are resistant to oils and chemicals, so your supplies stay safe and your box stays strong. They are also lockable for protection when not in use.