Reinforced plating spring with high strength which is made of high-quality steel.10-40Kg adjustable strength design, you can adjust the strength tension from 10kg to 40kg by turning the rotary knob. An excellent training tool that strengthens your hands, wrist, and forearm's power with adjustable strength
Small, exquisite, lightweight, and portable, you can carry it with you to exercise anytime.
Suitable for the elderly, the office crowd, and sports enthusiasts.
Material: New Reinforced ABS + TPR Elastic Plastic + Sturdy SteelStrength Range: 10-40 KgColor: RandomSize: 16x11x2cm