Come and see our amazing products. Wonderfulwu Finger Exerciser, Extendable and Strength adjustable Finger Exerciser Ukulele/Guitar/Bass/Piano/Saxophone/Violin Finger Trainer with Round Keys for Exercise. ALL-IN-ONE HAND EXERCISER: Specifically designs for many musical instrument players and also can be used for finger strength exercise in daily life. DESIGN WITH CURVE: Finger strength practice can be very comfortable and the fatigue and pain can be avoided. FINGERS TRAINING: It can be used to train your fingers, wrists and arms. It can effectively improve muscle strength, flexibility, control, endurance and coordination ability. 5lb It suitable for people of all ages. Pls confirm further with us if any query about packing info, inventory status and time schedule.