PRYFIL Ultimate Finger Exerciser Strength Trainer Exercise Ball Hand Strengthener Hand Balls Workout Equipment for Men & Women (Black Heavier Finger) ABS (Acrylonitrile Butadiene Styrene)

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.

Customized Individual Five Fingers Buttons: Easily adjustable for each finger to increase the force required to press each plunger and the silicon rubber pads are comfortable on the palm and finger tips.

Better for Improving Strength & Dexterity: This is such an easy and painless way to strengthen our fingers and hands that even have considerable arthritis. It allows us to painlessly squeeze, unlike some other exercisers we've used.

Adjustable Tension Finger Hand Grip Strengthener: the black one to provide heavier finger and hand exercise training .

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.

NOTE : This product is not for everyone, it is not for those who do not have power in their hands, they will not be able to use it, and then they will return and say that the product is bad, so think carefully before ordering, if you have the power to use it then only buy, don't buy it as a child's toy, buy it after seeing your capability. If you want to increase stamina then you will have to struggle.If you think that your stamina will increase without exercise then it is impossible. If you exercise regularly it will definitely give you positive results.