Premier Music Teaching Aids was founded with the goal of providing innovative and effective teaching aids to music educators. Our magnetic fingering charts are a perfect example of this. Teachers who use our charts have seen a significant improvement in their students' understanding and retention of fingering positions. Our charts are made with high-quality materials, making them durable and long-lasting. The primary writing surface is the dry-erase board, not the magnet.  This design, with normal use, will last for years!