Dry-erase board kit makes participation for your entire class easy. Each kit includes 12 sets - each with one dry-erase board, one marker and one eraser. Dual-sided, magnetic boards feature a smooth, durable surface for lasting brightness. Dry-erase markers create crisp lines that erase cleanly for quick corrections. At 2" wide x 2" long x 1\/2" thick, the whiteboard felt eraser is perfect for small hands for accurate use. Board sets are perfect for review sessions, class assessments and more.