1. The heavy-duty swing hanger is made of high-quality one-piece cast iron, the bottom is specially hardened and coated with black anti-rust coating to withstand all bad weather. 2.2 Pack Swing Bearing Design: The swing hanger is made of one-piece cast iron and equipped with high-quality double bearings to effectively prevent metal friction and ensure smooth and quiet rotation. 3.2 Pack with Silent Washers: The swing hanger is coated with black anti-rust coating, suitable for outdoor use in bad weather. Industrial and crafted plastic washers are specially designed to prevent metal friction and provide a quiet and smooth riding experience. 4. Sturdy and Durable: The swing hanger can bear 2400 pounds. Whether you are hanging a swing or a sandbag in the gym, this swing hanger can meet your needs.