MaterialMade of high quality 304 stainless steel, stronger quality, corrosion resistance. Without significant stretching or negative effects on the surface due to weathering. 180 rotatable hookThe hook holder can be rotated 180 freely with a pull loop that can be easily opened, design innovative and patented. In the garden, on the boat, camping, hiking, fishing and sailing. Easy to installNeed to pre-drill two holes in wood joists or concrete, then install the screws. Expansion bolts for concrete applications, pre-drilled, installed in minutes. Safe and ReliableHeavy duty commercial grade swing hangers are designed for use by children and adults, and for living spaces with 450kg rating, you will feel safe. Wide UseFor indoor and outdoor use, perfect for hanging chairs, rocking chairs, carry bags boxing, chandeliers, yoga, or hanging anything else heavy on a hanging rack. Please note that due to manual measurement and display differences, there may be slight differences between individual products and photos.