High Strength Grip Strengthener : The hand grips strengthener is made of high-quality high-precision carbon steel and PP material, exquisite workmanship, thickened and high-strength design, double thickened spring, wear-resistant, rust-free, strong elasticity, and durable of durability and stability., 5-100KG Adjustable Resistance Design : The resistance adjustment range of the forearm strengthener is 5-100kg, and the strength can be adjusted by turning. You can gradually increase the strength of your hands through exercises, which is suitable for both beginners and experienced fitness enthusiasts., Automatic Counting Design : The forearm trainer adopts an automatic counting design, the number of times can be seen at a glance, the digital display can be reset, and it is easy to use. The grip strength is small in size and easy to carry, which means you can exercise the grip strength of your hands in any situation, such as home, office, gym, etc.