Ortable Grip- Different from most exercises, grip strengthening training is a workout that can be done anytime, anywhere. The portable and lightweight design (5.4 inches, 0.47 pounds) makes the grip strengthener easy to put in your pocket or backpack. You can use it at home, in the office or on the trip, which allows you to achieve a fruitful exercise during your break Sturdy Structure - This hand exerciser is carefully made of high-grade alloy structure. quality and can provide you with good service for many years. Ergonomic aluminum handle with knurled texture, non-slip and durable, not easy to rust. High quality spring steel strengthens the grip structure of the forearm and can give you a great exercise 5 Levels of Adjustable Resistance- The grip strengthener offers 5 levels of resistance (50 lbs , 75 lbs, 100 lbs, 125 lbs, 150 lbs) so you can gradually strengthen your finger and forearm exercises. Knob adjustment design makes resistance adjustment more convenient to meet your specific training needs Hand Strength Training and Rehabilitation- This hand trainer is designed to exercise your fingers, wrists , palms and forearms. Its the perfect way to strengthen the hands of athletes (climbing, boxing and shooting) and musicians (guitarists, pianists and violinists). The grip strengthener can reduce joint pain and stiffness and is suitable for rehabilitation after arthritis, tendinitis or hand fractures After-sales Guarantee- This portable hand gripper is a great gift for anyone. those who like to train and exercise. Our customer service is online 24/7. If you have any questions about the product, you can contact us at any time. We will provide you with all the help you need