<br>Hardware kits are recommended to install a shade sail to any structure, tree or pole. <br> <br>One set of rectangle/ square shade sail hardware includes: Turnbuckle x 2pcs, Pad eye x 4pcs, Snap hook x 2pcs, Screw x 16pcs, Plastic expansion x 16pcs <br> <br>Turnbuckle- A device for adjusting the tension or length of ropes, cables, tie rods, and other tension systems. <br>Snap Hook- A metal loop with a spring-loaded gate, used to quickly and reversibly connect components. <br>Pad Eye- A flat metal plate with a projecting loop or ring, made all in one piece, providing an attachment point. It is secured by screwing, bolting, or welding it in place. <br> <br>Having the proper hardware makes installation so much easier compared to piecing it together yourself.