Playground -Ceiling Swivel Hooks Highlights generic brand Ceiling Swivel Hooks Description: Wall mount designed with 4 holes providing greater endurance, increased stability and safer supports Made of premium stainless steel for protect against corrosion and rust. Melting point welding technique Ensure strength and durability Suitable for indoor and outdoor use, such as hanging chairs, swings, hammocks, aerial yoga, punching bag, etc. Fixing only to concrete ceilings or wooden beams with fixing hardware attached. No attachment to plasterboard ceilings, clay walls or other soft building materials Material: Stainless Steel Size Chart: Disc Diameter: Approx. 8.9cm / 3.5inch Arc (WxH): approx. 4x4cm/1.57x1.57inch Screws Length: Approx. 6.6cm / 2.6inch Package includes: 1 piece of disc 4 pieces of screws Note: Due to manual measurement, please allow 1-2mm differences in size Due to the light and screen difference, the the item's color may be slightly different from the pictures. Try to understand