Rust-proof Pad Eye Plate: The ceiling hooks for hanging made of premium stainless steel to protect against corrosion & rust, which are suitable for installation indoors and outdoors. Ring Hook with 4 Holes: The wall anchor is designed with 4 holes for greater durability and stability. The support is safer than a bracket with 2 holes. Safely supported up to 1000lbs with a high quality welding process. Solid stainless steel structure provides higher strength. Wall Ring Creat Wider Space: The ceiling hammock hook is very small for your room (possibly smaller than the same type), and you can make the most of the overhead space. Heavy Duty Hooks Application: The suspension ceiling hooks perfect for yoga hammock, hanging chairs, hanging swings, hanging lamp, sling trainer, hanging cave, sun sail, hanging seat, hammocks, awning, boxing bag, punching bag and more. Specification:Suspension Trainer Bracket is easy to install and the same diameter hole can be mounted directly, simple and quick! colour: silver Material: stainless steel size: fixed hanging plate: diameter 90mm, aperture 8mm;spring lock: length 80mm;expansion screws: length 70mm Package Contents: 2 * stainless steel fixed hanging plate 2 * spring lock with nut 8 * expansion screws Ceiling Hooks Heavy Duty Attention: Ceiling mount suspension Only to be mounted on concrete ceilings or wooden beams with the included mounting material. No application to plasterboard ceilings, clay walls or other soft building materials. Note:Please make sure the wall is solid and sturdy. Please pause the product if there are signs of looseness.