Features: Hydraulic design allows for the adjustment of resistance levels according to individual needs, suitable for users of different fitness levels, from beginners to advanced athletes, who can find the appropriate training intensity. In addition to enhancing arm and grip strength, this arm strength device can also effectively exercise multiple muscle groups such as chest and back muscles, providing more option for shaping the entire body muscles. The built-in counter can record the number of training in real time, helping users better track their training progress and enhances motivation. Make of carbon steel and plastic nylon, the equipment ensures durability and stability, and can maintain good performances even after long-term use, making it suitable for home fitness use. Nonslip, wear resistant handle ensures a comfortable grip for extended use. Specifications: Component: Hydraulic Cylinder, Carbon Steel, Plastic Nylon Color: Red Color/Black Size: about 23x7x35cm/9.06x2.76x13.78inch Package Includes: 1pc Arm Exerciser note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.