Product Grip strength deviceThis is an enhanced grip. Regular use can exercise ten-finger strength, strengthen grip, and exercise hand strength. This gripper is small in size and easy to carry, making it very suitable for use in offices, homes and gyms.Exercise methodExercise methodWhen exercising, hold for one second after squeezing, and then release. Dont loosen it quickly, otherwise the exercise effect will not be achieved and the muscles will be sore.Persistence every day will increase your grip strength and your forearm strength will gradually increase. Exercise every day, instead of exercising hundreds of times at a time, rest for a few days and then exercise. This will not work and will strain your muscles.Novice practice: 4 groups a day, each group of 8-12, each group rest 60 seconds, after practicing the left hand, then practice the right hand.Advanced practice: 4 groups a day, each group of 20-25, each group rests for 30 seconds, after practicing the left hand, then practice the right hand.Non-slip handle designNon-slip handle designFingerprint handle design and stripe design, not easy to slip, increase non-slip comfortIntensity adjustmentIntensity adjustmentRotate the nut to adjust the strength, and the resistance can be adjusted between 20 to 70 kg (44 to 154 pounds).Arc adjustmentRotating adjustment handleThe rotating arc adjuster can adjust the opening arc of the handle, which is more convenient for your hand to grasp. The handle width can be adjusted from 1.8 inches to 3.3 inches