Adjustable Finger ExpanderExercise your fingers for better guitar playing! Adjustable Finger Expander allows you to build and maintain the strength and flexibility in your fingers that are required for playing guitar or bass effectively. By consistently stretching your hands and fingers you'll ensure a strong performance every time you pick up and play your guitar. Not only on guitar, but you can also use it for piano or saxophone too! FEATURES FREE ADJUSTMENT Adjust the size