High quality materials: Our product is made of high quality spring steel and has excellent spring force. The surface of the spring is chrome plated and is characterized by corrosion resistance, rust protection as well as oxidation resistance, which makes the expander look very nice and also easy to clean. The handle is made of environmentally friendly PP materials, which is durable, non-slip and wear-resistant; Five-speed adjustable: The expander has 5 detachable springs, and the tension force of each spring is of 5kg. When you exercise, you can reduce or increase the number of springs according to your needs to adjust the resistance; Multifunctional: The expander is a perfect aid for whole body training, which can not not only train your arms, legs, shoulders, chest and back, but also strengthen your grip and muscle strength and improve your figure. Besides, the expander is small and light, easy to carry and store; Scope of Delivery & Application: Scope of Delivery: 1 x Expander. The expander is perfect for all kinds of people who want to exercise, and also an essential home and office accessory. Note: When using, please pay attention to safety; Perfect Customer Service: If you are not satisfied with the product, please contact us immediately. We are committed to solving the problem within 24 hours and providing you with a satisfactory solution. Enjoy your shopping with us!