High quality single hand power grip.Sturdy and robust design. 10 kg - 40 kg adjustable range, You can adjust the strength tension from 10 kg to 40 kg by turning the red rotary knob.An excellent training tool that strengthens your hands, wrist and forearm.Small, exquisite, lightweight and portable, you can carry it with you to exercise anytime.Suitable for the elderly, the office crowd and sports enthusiasts.Size 6 x 4 x Inches