Material: high quality 304 grade stainless steel<br><br> A Set of Hardware Kit Includes:<br> Turnbuckle x 4 pcs<br> Snap Hook x 4 pcs<br> Pad Eye x 8 pcs<br> Screw x 32 pcs<br> Plastic Expansion x 32 pcs<br><br> Usage:<br> Turnbuckle - Adjust the tension or length of ropes<br> Snap Hook - A metal loop which can quickly and reversibly connect components<br> Pad Eye - Secured by screwing or bolting<br><br> With our Sun Shade Sail Hardware Kit, you can install a shade sail to any structure, tree or pole whenever. It makes installation so much easier.