1、Dual function, can make your wrist get exercise, and it is also a hand-muscle developer. 2、Foldable grip design, high-quality PP handle, comfortable feel, beautiful and fashionable shape, high toughness, strong and durable. 3、The buckle at the joint is firm and easy to disassemble, and the chest expander and the spring are connected by super thick mount, safe and firm, and convenient for disassembly and assembly. 4、5 stainless steel carbon spring steel wires, each bearing 147N. 5、Specially strengthen your chest, arms and shoulders. Condition: 100% Brand New Item Type: Chest Expander Material: Spring steel + PP Color: As picture shown Total length: Approx. 68cm/26.8in Handle width: Approx. 11cm/4.3in Handle length: Approx. 16cm/6.3in Spring length: Approx. 25cm/9.8in Weight: Approx. 965g Use reminder: Try to practice in a place two meters away from the crowd. Use it alone. Do not pull on two people, or fix one end on other objects. Before the exercise, you need to check the hooks, handles, springs and other parts of the appliance for any abnormalities. Exercises should not be too fast or too fast. What is important is that when the appliance is pulled back and recovered, the movement must be slow, effectively exercise endurance, and prolong the service life of the appliance. Tips: According to need, it can be adjusted to four or three. Check carefully before use and pay attention to the safe use of the chest expander, which is a device suitable for public fitness exercises. Use chest expander to exercise the pectoralis major, deltoid, and biceps. The biceps is a muscle with two muscle heads, the main function is arms bent. In flexing the arm, another muscle, the brachial muscle, was also used. When doing some forearm lifting exercises, such as high chest expander curl or trans high chest expander toy, the brachial muscles can be full exercised. The main muscle of the upper forearm, the flexor muscle, also plays a role in the flexion of the arm, and the flexor muscle can be strengthened by the chest expander side curl. 1 x Chest Expander