HEAVY DUTY HANGER KIT -- Our strong chain is made of high quality 304 stainless steel, 5mm diameter, seamlessly welded, each chain can hold 500Lb load capacity. The carabiner is made of 8mm stainless steel. The high quality goods make it extremely durable and rust resistant. Ideal chains for heavy duty and outdoor use. LENGTH ADJUSTABLE HANGER CHAIN -- There is a pair of carabiners on each end of the patio swing chain. The maximum length is 25 inches (63cm), but you can adjust the length as needed. The chain is 19.58 inches (50cm), you can move the carabiners to any part of the chain loops. You can also reverse the chains to double the capacity. WIDE APPLICATION: This hanging chain set is suitable for both indoor and outdoor use, hanging chairs, hammock chairs, swing chairs, boxing bags, punching bags, yoga swings, love swings or sun awnings. EASY TO INSTALL -- Just tie the two carabiners to the ceiling hanger and the hanging chairs or other objects, adjust to the height you want. Then it's ready to use. WARRANTY & SERVICE -- We a 1-year warranty on this hanging chain set. If you encounter any problems or have any questions about this product, please feel to us.