Yosooo Guitar Beginner Hand Exerciser Finger Strengthener Trainer (Gray)

Color:Gray Features: The exerciser is made of quality materials with fine machining, sturdy and durable. Spring structure with comfortable buttons, great resilience is good for training the fingers. 5 pressing keys to practice finger-interval, with 2 holders to keep the keys down. Good tool for pre-show or warm-ups practice and maintaining conditioning when away from your instrument. Applicable to many instruments, piano, guitar, etc. 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