Using high strength metal springs to maintain long lasting elasticity and improve exercise efficiency. Suitable for music enthusiasts learning or playing instruments like piano and guitar,this finger exerciser helps improve finger dexterity.Perfect for beginners,students,and professionals. Use this portable finger exerciser at home,school,studio,or during.It's a convenient tool for musicians. Boosts your finger strength and flexibility with this finger exerciser.Achieve better results in your practice. Crafted from high strength ABS and silicone,light weight and enduring.