The descriptions for this product are taken directly from Amazon so don't blame me for bad English or misspellings. The prices you see are what I am asking for each item.
Item:1Pcs Porch Swing Springs Heavy Duty 550lbs Heavy Bag Spring 12.2in Steel Porch Swing Spring (1 Pcs)
Item Description:High-quality stainless steel porch swing springs suitable for hanging chairs, hanging chairs, hammocks, swings or baby swings, suitable for all items you want to connect to the ceiling and swing. Sandbags, sandbags, hanging tents and awnings.
The porch swing springs makes people enjoyable and light elasticity, especially when connected to the concrete ceiling, it can also relax the body and mind, especially when fixed on the concrete ceiling, the spring can be loosened and ensure a comfortable swing and rotation. Bring a new feeling to the hanging chair.
This porch swing springs is made of very strong and hardened steel and galvanized material, can prevent rust and moisture, the maximum load capacity can reach 550lb, tear-proof, and after a special hardening treatment, it can be processed into a particularly high quality , Strong anti-fracture ability. With the carabiner, you can quickly and easily achieve a firm fixation.
Easy to assemble, two large carabiner hooks are simply hooked in the holes of the spring, so any bracket and ceiling mount can be used.
Using high-quality materials, long service life