Versatile Full-Body Fitness EquipmentThis Twister Arm Trainer is a compact and efficient exercise tool that delivers a upper-body workout. Its unique U-shape design not only targets your arms but also engages multiple muscle groups including the chest, wrists, back, and shoulders, work multiple muscle groups with precision.Safe FitnessFeaturing advanced Twister and arm training technology solve the rebound problem for safe fitness. Crafted with high-strength metal springs, this arm trainer ensures strong elasticity, durability, and stability. The outer leather covers the metal to prevent sports injury; The handle is made of thickened anti-slip foam, ensures durability, safety, and comfort.Portable & Space-Saving DesignDetachable designed is easy to store and convenient to carry. Lightweight and easy to assemble, this arm trainer is perfect for home use. Its compact design allows you to store it effortlessly, making it ideal for small spaces while still delivering a powerful workout experience.Adjustable ResistanceThis arm trainer offers customizable resistance from 40 to 100 pounds, you can adjust the resistance to meet your specific training needs. Whether you are a beginner or a professional athlete, this adjustable spring workout bar can help you with strength training.Satisfaction Service a professional home fitness brandIf you have any questions about the product or are not satisfied with the product, please feel free to contact us, we will provide you with the best solution. Your satisfaction is our biggest concern.