Specifications: Material: 304 stainless steel Size: as shown Color: silver Load capacity: 450 kg Features: Mounting on concrete steps: 1. Draw two locations you like. 2. Drill two holes in concrete or beams and insert the expansion anchors into the holes. 3. Then install the hook and chain or rope. 4. Finally, hang a chair or sandbag, swing. Installation on wooden steps: The only difference is to insert the hex screw with a screwdriver. And you can install our swing hook. Note: 1: The working limit is 450kg load, make sure the surface you are installing can withstand the weight and force. 2: Only attach the unit to concrete ceilings with the included mounting hardware. Not suitable for plasterboard ceilings, rammed earth walls or other soft building materials. Package includes: 1 * 360° rotating hook 2 * Screws for concrete application 2 * Screws for wood application 1 * Spring buckle 【upper material】: Our swing brackets are made of high-quality 304 stainless steel, are rust-proof,