1. 6 resistance levels to choose from: Silicone Guitar Finger Exerciser provides you with 6 levels of resistance, including 6.6LB, 8.8LB, 11LB, 13LB, 17LB, and 21LB. You can choose the appropriate level according to your grip strength.2. Good quality material: Our finger stretcher is made of good quality silicone, which is safe and durable, not easy to tear, and can be used for a long time.3. Portable and lightweight design: The Finger Trainer is small and light enough to slip into your gym bag or pocket. You can enjoy a workout at work or at play. Exercise your hands anytime and anywhere with the finger extension exerciser.4. 6 Levels of Resistance to Choose: The Silicone Guitar Finger Expander offers you 6 levels of resistance, including 6.6LB, 8.8LB, 11LB, 13LB, 17LB and 21LB. You can choose the appropriate level according to your grip strength.5. Ideal for sports enthusiasts: The finger strengthener can improve the finger strength of athletes (climbing, fitness, tennis, baseball, boxing) and musicians (guitar, bass, pianist and violinist) and daily household chores (driving, typing, writing, working, etc. .). Note: The data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there will be some color difference , depending on the physical object received.