Product name:Grip Strength Trainer Product size about :13*11cm/5.1*4.3in Product color: As shown in the figure Product material:Metal product features: 1. 6 strengths to choose from: The arm strength trainer has 6 different strengths to choose from, 50-300lb is suitable for training needs at all stages, from beginners to advanced users, to meet the needs of different strengths of exercise, and help users gradually improve arm and finger strength. 2. High-quality spring steel material: Made of high-strength spring steel, it is both strong, and can ensure good elasticity and recovery force, and can withstand long-term use, ensuring that users have a safe experience when exercising. 3. Multifunctional training equipment: It can not only be used for arm strength training, but also effectively enhance finger strength. It is suitable for athletes, musicians or any users who need to improve hand strength and flexibility. It is an ideal choice for improving grip and control. 4. Portable design, training anytime, anywhere: The lightweight and compact design makes the trainer easy to carry. Whether at home, in the office or traveling, users can perform efficient strength training at any time and easily integrate it into daily life. 5. Enhance muscle endurance and flexibility: By using the arm trainer regularly, users can not only enhance muscle strength, but also improve hand flexibility and endurance, help improve overall sports performance and daily activities, and achieve a more comprehensive improvement in physical fitness. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can contact us at any time. We will give you some suggestions, but for your reference only. Shipment includes: 1/6 pc Grip Strength Trainer