HEAVY DUTY HOOK: This stainless steel ceiling and wall hook is ideal for hanging heavy equipment and interior decorations. Our set consists of 1 swivel hook, 1 fixing hook, 2 screws and 2 expansion screws. The main plate measures W7 x D4 x H9.6cm, while the hook measures L8 x W4cm. For full dimensions please refer to image 2. The swivel hooks can hold a maximum load of 400kg. 304 STAINLESS STEEL: This quality 304 stainless steel ring is extremely durable and strong. The material is very hard, non-toxic and environmentally friendly. Stainless steel won't rust and resists corrosion, and these hammock stands can be set up indoors or outdoors, they're ideal for professional purposes and stand up to prolonged use. They are easy to clean and can be attached and removed multiple times. EASY INSTALLATION: Each punching bag hook is drilled with 2 holes to easily attach it to a ceiling or wall. Hex head screws (expanding screws) are made for concrete and other screws are made for wooden