High Quality: Made of high quality material, safe and environmentally friendly, stable and durable. It's an inexpensive, affordable, and easy-to-carry tool. In the middle there is a tension spring and two handles that are covered with rubber or plastic at both ends. Perfect Body Shape: The arm strength trainer has strong rebound force which can help you build a perfect body. You need to choose the size according to your physical condition / muscle strength, we can guarantee the quality of the items for you Muscle Exercise: Exercise the muscles of your shoulders, arms, and back to keep the body healthy and strong. Improve your forearm and wrist strength. If you insist, the fitness effect is remarkable. Anti-slip design: anti-slip rubber handle, ergonomic design, easy to hold and use, easy to carry, easy to exercise in offices, schools, families, travel and other places. Some of the exercises we'll see are at least as effective as the expensive and bulky equipment typically found in gyms. Suitable for people:beginners,teenagers, women, chest exerciser,Chest and Arm Builder Withstand the maximum pressure value: 30Kg colour:Black Material:Spring steel size:58 x 3CM Package Contents: 1 x forearm trainer Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.