[Multi-Muscle Upper Body Training] Our Twister Arm Trainer targets multiple muscle groups across your upper body, including chest, arms, shoulders, back, and abs. One device supports various exercises, making it ideal for strength training at home. Great for muscle building and strength training. [Adjustable Resistance for All Fitness Levels] This Twister Arm Exerciser comes with two sets of spring workout bars (65–135lb), letting you switch resistance levels based on your training needs. Easily adjust intensity and stay on track with your goals—perfect for both beginners and fitness enthusiasts. [Durable Construction & Smooth Performance] Built with high-strength metal springs, the power twister bar delivers stable resistance and long-lasting performance. Each movement feels smooth and controlled, helping you stay focused while reducing interruptions during your workout sessions. [Comfortable Grip & Ergonomic Design] Designed for comfort and safety, the arm exerciser features anti-slip foam handles and reinforced frame padding. The ergonomic design fits securely in your hands, minimizing fatigue and protecting your wrists during intense upper body training. [Detachable & Portable] This home fitness equipment is easy to disassemble and store. Its detachable structure fits in your backpack or luggage, making it perfect for travel, outdoor training, or small-space home workouts. Take it anywhere and work out anytime.