1. Our grip strength trainer is made of heavy-duty plastic, with high quality and durable. 2. It is adaptable to your strength with an adjustable resistance knob ranging from 10kg to 40kg and provide more diversity to your hand exercise. 3. Small-sized and compact, easy to carry around or put in a backpack. You can take it out to train your hand and wrist anytime and anywhere at your leisure time. The best choice for home or office training. 4. The ergonomic handle will provide a better grip for you while exercising. It will fit your handsrsquo; curve well and ensure maximum comfort. 5. This hand grip strengthener is sturdy and durable, which are great for building hand strength and stretching muscles. 6. Grip strength suitable for all age groups and fits well for all hand sizes. No matter yoursquo;re women or men, kids or adults, beginner or an experienced person. 7. The hand grippers will train your hand muscle perfectly, as well as helping relieve fatigue for computer users.