Product features and instruction: 1. The exotic material hollow structural design, the Inner Tibet egg-yolk eraser, may squeeze out remarks into, addition use pleasure. 2. Through the use of grip ball, it helps the dialysis patients to leak the vessels so that it is easier to do the therapy. 3. It helps the stroke patients practice the muscle function repeatedly and promote physical terminal neurovascular active. 1. training hand muscle 2. fitness hand 3. Environmental Friendly 4. easy to taken 5. New Material Design 6. QC Test for Each Item 7. New Material Design