1.Enhance Grip Strength and Relieves Stress: Pressing the stress ball can strengthen your hands and forearm muscles, enhance finger dexterity and agility, relieve hand fatigue. It's simple and efficient, helps to enhance grip strength, recovery from injuries and illnesses, releasing stress and increasing endurance 2.Finger Strengthening Exerciser Balls Design: This finger ball exerciser has just the right squeeze to strengthen our hand. These hand strengthener grips are very effective for keeping the ball in hand during exercise, didn't bind, and didn't interfere with the alignment of fingers during use 3.Five Fingers Buttons: Each finger can easily increase the force required to press the corresponding part, and the silicon rubber pads are comfortable on the palm and finger tips 4.Real Finger Strength Training Changemaker: These hand exercisers are great for guitarists, office workers, pianist, musicians, artist, craftsperson, woodcarver, webpage designer, etc. A must have for building finger strength