【Premium Hanging Solution】Complete kit includes: 1 steel spring, 1 pin plug hardware, and 1 high-performance bearing. Perfect for upgrading or replacing existing hammock chair hardware. 【Industrial-Strength Materials】Features rust-proof steel construction with baked paint finish. Bearing is heat-resistant and wear-resistant for smooth, quiet operation. Supports up to 500lbs for ultimate safety. 【Enhanced Comfort】Spring absorbs vibrations while swinging, reducing stress on chair structure and providing a smoother, more comfortable rocking experience. 【Universal Compatibility】Works with most hanging chairs including egg chairs, porch swings, freestanding swings, and hammock chairs. Ideal for indoor/outdoor use. 【Quick Installation】Simple clevis pin connection system allows for tool-free installation in minutes. Clear instructions included. 【Quality Guarantee】Every component is factory tested. Backed by our 100% satisfaction guarantee - replacement or full refund if not completely satisfied.