13 STRENGTH LEVEL : 13 Different Weights Represent 13 DistinctLevels, Allowing You To Gradually Increase The Strength Of Your Fingers, Wrists, And Arms. EXERCISE EFFECT : Say goodbye to Tennis Elbow, Golfers Elbow, andwith theexerciser Bar. It's a cost-effective solution to avoid expensive treatments and improve your overall jointand mobility.This innovative tool is designed topain and discomfort in your hands, wrists, and forearms through simple daily exercises. With just 3 minutes a day, you'll experience noticeable musclein a week or less. VARIOUS APPLLAATIONS Suitable for various activities, including strength training, rehabilitation, sports, andrelief. Weightlifters, rock climbing, martial arts, tennis, golf, wrestling, and baseball, where grip strength is crucial for performance. In addition to this, musicians, particularly guitarists, pianists, and drummers, office workers and olders can benefit from using hand grippers. DURABLE AND RELIABLE The handle is made of durable plastic material and high strength silicone. Sturdy and durable,for building hand strength and stretching muscles. GREAT GIFT Beautifully packaged, each hand strengthening devices level is gradually increasing, allowing you to gradually increase the resistance, the hand strengthener set will be thegift for those who love toand work out.