STRONG HOOK: This stainless steel ceiling and wall mount hook is perfect for hanging heavy equipment and indoor decorations. Our set includes 1 swivel hook, 1 mounting hook, 2 screws and 2 expansion screws. The main plate measures W7 x D4 x H9.6cm while the hook measures L8 x W4cm. Please see picture 2 for full dimensions. The swivel hooks can bear a maximum load of 400kg. 304 STAINLESS STEEL: This high quality 304 stainless steel ring is extremely durable and stable. The material is very hard, non-toxic and environmentally friendly. Stainless steel does not rust and is corrosion resistant. These hammock stands can be installed indoors or outdoors, they are ideal for professional purposes and can withstand prolonged use. They are easy to clean and can be attached and removed multiple times. EASY INSTALLATION: Each punching bag hook has 2 holes to easily attach it to a ceiling or wall. Hex bolts (expansion bolts) are made for concrete and other bolts are made for wood surfaces. Our kit