INCLUDES 1 pcs Hammock Chair Swing Spring 1 pcs Pin Plug Hardware and 1 pcs bearing.The spring and upin plugs are made of steel, surface paint baking process made, rustproof, corrosionresistant.Upgrade Kit Bearing BEARING made of Steel, have great wearresistant, high temperature resistance and high hardness It can effectively increase lubrication and reduce nois.Spring can absorb the vibration when shaking, play a buffering role, increase the chair service life, and make it more comfortable when shaking.WIDE APPLICATIONFor Use With Almost All Hanging Chair,egg chair,porch swings, freestanding swings, hammocks and hammock chairs.SAFER SUSPENSIONWith a loadbearing capacity of more than 500 pounds, the spring can meet the daily use of most families, which is consistent with the loadbearing of ordinary egg hanging chairs.EASY TO USEYou can refer to the picture for the installation sequence,clevis pin passes through the support and connects to the spring.You can install it or replace the existing ones with in minutes.QUALITY GUARANTEEEvery piece of product has been carefully checked before packaging. Satisfaction guaranteedFor any reason you're not completely satisfied, you can ask for a replacement or full refund, no questions