Line-Master is a versatile time-saving tool for teachers at all grade levels. It is lightweight, durable and easy to use. Markers can quickly be positioned for charts, graphs, learning games, staff lines for music, a teacher´s daily agenda, or for a variety of language arts applications, including letter formatting and penmanship. Magnetic. Available in Red, Blue, Yellow, Green, and Black (no color choice). Markers not included. Sold as a pack of 6.