Effective Grip Strengthenerits design channels the resistance from its spring to your hand, Perfect for improving power and flexibility of forearm, wrists, fingers, hand ,and muscle building, Suitable for hand recovery and strength training . Adjustable ResistanceWith a rotary adjustment button, you can easily adjust the intensity, You can adjust it from 22 lbs (10 kg) to 132 lbs (60 kg) according to your need. Just 5-10 minutes a day, continuous intensive training . High QualityOur grip training device uses high-strength alloy springs, which are durable and will not rust. The outer shell is made of environmentally friendly PP material. The handle has a grain design, non-slip, and easy to use. . Use AnywhereThey are made of lightweight and high-quality materials, so you can easily put them in your bags, pockets and carry them with you. They can be used anytime, anywhere, including gyms, homes, restaurants, schools, offices, and even in daily work. . Perfect for EveryoneThis powerful wrist trainer is very suitable for athletes, tennis players, rock climbers, mountaineers, bodybuilders, men, women, youth, suitable for all age groups, suitable for all hand types .