Tuning pegs are small mechanical devices found on stringed instruments like guitars, violins, and ukuleles. They are used to adjust the tension of the strings, which in turn changes the pitch of the notes produced. By turning the tuning pegs clockwise or counterclockwise, musicians can raise or lower the pitch to achieve the desired sound. Typically made of metal or plastic, tuning pegs are located on the headstock of the instrument. Each string has its own peg, allowing for precise tuning. Properly tuned strings are essential for producing harmonious music and ensuring that the instrument sounds its best.