Dilwe Finger Exerciser Hand Strengthener Trainer Tension Exerciser Grip Trainer for Piano Guitar

Features: 1. HIGH QUALITY MATERIAL. The finger exerciser is made of plastic and metal, all them have high quality,  with fine machining, it is sturdy and durable.  2. UNIQUE STRUCTURE. Spring structure and great resilience is good for training the fingers.  With buttons, this Hand Strengthener Trainer will make us comfortable. 3. FUNCTION. 5 pressing keys to practice finger-interval, with 2 holders to keep the keys down. The finger exerciser is a good tool for pre-show or warm-ups practice and maintaining conditioning when away from your instrument. 4. APPLICATION.  For Guitar, Piano, Golf, Tennis & Physical Therapy starter, all you can use this finger exerciser to practice your tension, grip and strength. Specification: Material: Plastic + Metal Color Options: Orange; Grey Strength Range: 3-8.5lb Size: Approx. 10.5 x 6.6 x 2.3cm / 4.1 x 2.6 x 0.9in Weight: Approx. 135g Package List: 1 x Finger Exerciser 2 x Key Holders