INCLUDES1pc Hammock Chair Swing Spring, 1pc Pin Plug Hardware and 1pc Bearing. The spring and pin plugs are made of steel, surface treated with baking process, rustproof, corrosion resistant.Upgrade Kit Bearing The BEARING is made of steel, has great wear resistance, high temperature resistance and high hardness. It can effectively increase lubrication and reduce noise. The spring can absorb the vibration during shaking, play a buffering role, increase the life of the chair and make it more comfortable during shaking.WIDE APPLICATIONFor use with almost all hanging chairs, egg chairs, porch swings, freestanding swings, hammocks and hammock chairs.SAFER SUSPENSIONWith a load capacity of more than 500 pounds, the spring can meet the daily use of most families, which is consistent with the loadbearing capacity of ordinary egg hanging chairs.EASY TO USEYou can refer to the picture for the installation sequence, the clevis pin passes through the support and connects to the spring. You can install it or replace the existing ones in a few minutes.QUALITY GUARANTEEEach product has been carefully checked before packaging. Satisfaction GuaranteeIf for any reason you are not completely satisfied, you can ask for a replacement or full refund, no questions asked.