Product Description Material: Stainless Steel Size: Fixed plate, diameter 90 mm; hook, 99.5*47*8 mm; screw, 11.5*67 mm Color: Silver, Black Quantity: 1 set Package Contents: 1*fixed plate, 1*spring hook, 4*screws 1. SAFE & DURABLE: The chair hanging frame can withstand loads of up to 400 kg and provides a firm grip. The sandbag hanging device is also suitable for mounting in a solid concrete ceiling. The robust safety lock can prevent sandbags, hammocks, etc. from slipping off. 2. CORROSION RESISTANCE, HIGH HARDNESS: Stainless steel ring made of high-quality materials. Rustproof, corrosion-resistant, high hardness, non-toxic and pollution-free, and protects the environment. Suitable for multiple scenarios. 3. COMBINATION OF SUITS: This set includes 1 fixed plate, 1 snap hook, 4 screws with which hanging chairs, sandbags, and other items can be attached very well; it is durable and resilient. 4. EASY ASSEMBLY: You can easily and securely mount the swing hook set to the ceiling or wall indoors or outdoors. All you need to do is pre-drill four holes in the chosen position, attach the mounting plate, then attach the screws with pins, and finally hang the snap hook on the chassis. 5. VERSATILE USE: The heavy-duty ceiling hooks are suitable for hanging chairs, sling trainers, gymnastic rings, boxing bags, awnings, children's swings, hammocks, suspension trainers, and can be mounted with the boxing bag suspension.