1.BALANCE EXERCISEOur gripper comes in 2 packs. Compared with one pack, you could train your two hand at the same time to avoid the difference in muscle size between the left and right hands. 2.ADJUSTABLE RESISTANCEAccording to the needs of exercise, you can adjust the grip force in the range of 5kg-60kg (11-110 Lbs), which is very suitable for men and women who want to exercise grip strength. 3.PROTABLE DESIGNAIXPI hand gripper is made of lightweight and high-quality materials, and the size is 4.3*5.8 inches, which is very suitable for carrying out. So you can start grip training anytime and anywhere. 4.MULTI-PRUPOSEThe hand grip strengthener forearm grip is perfect for improving strength, power and speed in the wrists, fingers, and forearms. It is not only the best choice for rock climbers, tennis players, athletes and musicians to enhance the flexibility of their fingers and wrists, but also very suitable for people suffering from arthritis, tendinitis, carpal tunnel, wrist fractures and tendon surgery recovery period. 5.HIGH QUALITYOur grip strength trainer is made of heavy-duty plastic and reinforced metal alloy materials With high quality and durable. If you have any questions, please contact us and we will solve it for you.