Features 1. Ideal For Sports Lovers: The Finger Strengthener can improve the finger strength of athletes (rock climbing, fitness, tennis, baseball, boxing) and musicians (guitar, bass, pianist, and violinist) and daily housework ( driving, typing, writing, working, etc.). 2. 6 Resistant Levels to Choose from: Silicone Guitar Finger Exerciser provides you with 6 levels of resistant levels, including 6.6LB, 8.8LB, 11LB, 13LB, 17LB, and 21LB. You can choose the appropriate level according to your grip strength. 3. Portable And Lightweight Design: Finger Trainer is small and light enough to fit in your gym bag or pocket. You can enjoy a workout at work or at leisure. Exercise your hands anytime, anywhere with the Finger Extensor Exerciser. 4. High-Quality Material: Our Finger Stretcher is made of high-quality silicone material, which is safe and durable, not easy to tear, and can be used for a long time. Specification Material: Silicone Color: Black Grey Package Size: 12 10 3 cm Weight: 40 g Package Include: 1x Finger Strength Trainer