✔︎ Use finger exerciser to exercise each finger and develop fingers flexibility, strength and coordination<br><br>✔︎ Palm rest allows user exercise the entire hand. Build hand and forearm strength. Playing bare chords can be a tough challenge, and the exerciser helps you overcome the problem easily<br><br>✔︎ The unique extendable finger exerciser is small and easy to carry anywhere<br><br><br><strong>✔︎ Specification:</strong><br>   1) Material: plastic<br>   2) Notice: Heavier is not always better. Be sure to choose the proper tension. DO NOT make sudden rapid repetitions, it could result in injury both to your fingers and the buttons<br><br><br><strong>✔︎ Package included:</strong><br>   1 X Finger Exerciser