AROMA AHF-03 Hand Finger Exerciser Extend(Black)

1. Material: plastic housing
2. Tension range: 4Lb~7Lb
3. Unique ergonomic design allows you to exercise the fingers, wrists and forearms while practicing the correct action for playing musical instruments
4. Increases finger speed, strength and independence
5. Size: 8.5 x 6.8 x 2.1cm
6. Weight: 75g