[Finger expansion] Effectively solve the problems of soft and weak fingers, hand collapse, insufficient finger span, etc. You can practice four fingers or two fingers. [Increase span] This tool can help you quickly open your fingers and increase the span; Stretch ligaments, increase strength, and make fingers softer; Continuous training can improve basic skills and exercise fingers. [Ergonomic design] The adjustable design is more ergonomic; It brings you the comfort of imagination. The finger position is made of soft silicone material, which is comfortable and convenient to use. [Convenient to carry] The finger cover is made of high-quality environment-friendly materials, which is strong in toughness, not easy to damage, reliable in quality, and can be used for a long time. It can be used anytime and anywhere. [Finger exerciser] Open the finger joint to make pressing rope easier. The basic handicrafts for stretching fingers and practicing musical instruments are suitable for beginners of guitar, violin and piano.