Features 1. Adjustable resistance: Rotate the knob to easily adjust the resistance, with a range of 22-440 pounds freely adjustable. Simply turn the knob to adjust the resistance, which is faster than shifting gears in a car. 2. Durable material: The double-layer steel pipe structure is sturdy and durable. The material is tough and more realistic, and the training equipment can bear up to 440 pounds. 3. Stable Triangle Structure: The stable triangle center design enhances motion stability and adopts a safer and more scientific structure. 4. Safety fitness: Professional micro rebound technology eliminates opportunistic excessive rebound, completely eliminates safety hazards, and achieves zero harm safe micro rebound fitness. 5. Convenient storage: The buckle design at the bottom of the handle is convenient for storage and carrying, and can be fixed with a humanized buckle after folding. 6. Meeting needs: This strength training equipment is designed under the guidance of professional coaches and is committed to meeting your diverse strength training needs. Specifications Material: ABS plastic, TPR rubber, hydraulic cylinder, spray coating process Product size: 16 * 5.08 * 42.9cm/6.3 * 2 * 16.9 in Package Include: 1* Chest Expander