The Cravens Polyethylene Plastic Desk Organizer has 44 compartments to accommodate drawing supplies up to 15-mm in diameter. These trays are the latest innovation in art supply storage. They are lightweight, durable and will keep your pencils, brushes and markers neat and handy. We also offer flexible foam organizers in a 24 compartment (Item # 12175) or 96 compartment (Item 12174) configuration for pens, pencils and markers. Each organizer features a cell phone slot to keep your phone clean and close during your projects. Designed to fit into easily into the Premier Metal Art Tray (item # 12167, 12168, 12169), they can also stand alone to be used as an office or craft supply drawer organizer