High Quality Material: Swing hanger and swing springs are galvanized, durable and anti-rust, can use for long time. Quiet & Smooth Swinging: Designed of silent bushing and high quality bearing, will reduce friction and noise, create more smooth and quiet swing. Wide Applicantion: Attaches to any wooden swing beam for compatibility with a variety of swing bench, hanging chair and hammock chair. Easy to Installation: Draw the hole position and mark with pen.Drill the marked hole with an electric drill.Tighten the wood screws with an impact wrench. Reliable After-Service: If you have any questions, just reach out to us and we will respond with a solution ASAP. Package Included: 2x Swing Hangers, 2x Swing Springs