This product is attached to parts of the flute base to elegantly compliment your instrument, and at the same time help fix your finger posture and alleviate some pressure. This tool is exceptionally helpful if never used before and highly encourage for beginning flutists. The ridges have been specifically designed to help your thumb stay in place unlike your standard bo pep. This runs for a much cheaper price and if used correctly, this tool can make you play faster by giving an easier center point for your thumb. With the hole directly correlating with your center of your finger, this will make it comfortable for the user!