Suitable for Athletes and Musicians: the package includes 1 piece of finger strengthener, which is designed to the finger strength and flexibility, can be a necessary assistant for athletes and musicians, such as rock climbers, tennis players, bass players, guitarists, pianists and more Exercise Your : hand extension exerciser, 20 lb; With the help of the hand extension exerciser, you can not only enhance the strength of the , forearms, and wrists, also isolate and the flexibility of each finger separately, convenient and practical; Use with : the guitar finger stretcher is mainly made of quality silicone material, with a elasticity, stable and to use, hard to tear, or deform, easy to clean, can be and applied for a long time Proper Size to Use: this finger gripper strength trainer measures about 18 x 5 cm/ 7.09 x 1.97 inches, and the hook and loop fastener can you with a comfortable fit, no need to worry about wrist circumference, so you can share it with your and exercise Reduce Hand Fatigue: the guitar finger trainer is suitable for office workers, students, teachers and other people who are prone to hand fatigue, helping reduce the hand stiffness, and finger function and movement Colour: Green + Gray Material:Silicone + alloy steel + fabric Package Contents: 1 x 20lb Fingerstrike 1 set x spare finger grips Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.