INCLUDES - 1 pc hammock chair swing spring, 1 pc pin plug hardware, and 1 pc bearing. The spring and U-pin plugs are made of steel with a baked paint surface finish for rust resistance and corrosion resistance. UPGRADE KIT BEARING - The bearing is made of steel and offers excellent wear resistance, high temperature resistance, and high hardness. It helps improve lubrication and reduce noise. WIDE APPLICATION - Compatible with most hanging chairs, egg chairs, porch swings, freestanding swings, hammocks, and hammock chairs. SAFER SUSPENSION - With a load capacity of over 500 pounds, the spring meets the daily usage requirements of most households and matches the weight capacity of standard egg hanging chairs. EASY TO USE - Installation is simple; refer to the included image for the installation sequence. The clevis pin passes through the support and connects to the spring. You can install or replace it within minutes. QUALITY GUARANTEE - Each product is carefully inspected before packaging. Satisfaction guaranteed. If you are not completely satisfied for any reason, you may request a replacement or a full refund.