Strength training equipment, twister arm trainer, arm bar, chest muscle training

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New, unused

[Innovative Home Strength Training Equipment] Unlike traditional arm training bars, this twister arm trainer can effectively train multiple muscle groups such as the pectoralis major, biceps, quadriceps, and latissimus dorsi depending on how it's used, helping you achieve a stronger body. Perfect for home workouts.

[3 Levels of Resistance Change for Each Side] This arm bar, suitable for beginners to advanced users, has 3 adjustment holes on each side (allowing for finer adjustments than 2 holes), enabling you to gradually level up at your own pace within a resistance range of 30-50kg. You can challenge yourself without overexertion.

[High-Quality Big Spring] We use a thicker, higher-strength metal spring, significantly improving the expander's elasticity, durability, and quiet operation. Safety is also a priority; the metal spring and copper tube of this strength training gear are properly welded, greatly reducing the risk of breakage compared to non-welded products.

[Chrome-Plated Pipe] To prevent rust from moisture during transport and storage, this arm trainer's copper tube is chrome-plated. It offers excellent corrosion resistance and can be used continuously for many years without needing replacement. The rounded edges of the copper tube also protect your safety!

[High-Density Nitrile Butadiene Rubber] The handle is covered with a thick, easy-to-grip nitrile butadiene rubber material, providing a comfortable user experience. Nitrile butadiene rubber is highly resistant to oil and wear, ensuring the twister arm won't easily break during repetitive training.

[Compact and Portable] This strength training equipment features a design that allows for easy disassembly, making it compact for storage. Whether you're outdoors, traveling, at the office, or at home, you can easily train your chest muscles and strengthen your arms without going to the gym. Achieve perfect muscles with just 10 minutes per session, 4 times a week!