High Quality Stainless Steel: Made of high quality M6 304 stainless steel, high load capacity, durable and sturdy, good corrosion resistance, waterproof/fireproof/corrosion resistant. rust. The shade sail fixing kit includes: 2 turnbuckles, 4 grommets, 2 snap hooks, 16 screws, 16 plastic extensions. Adjustable turnbuckle: Adjustable turnbuckle to create tension, which works great for tightening or loosening the sun sail. Get the sail looking nice and taut without the dreaded sagging. Built for durability and reliability. Wide Application: The complete heavy duty shade sail fixing kit is easy to use and perfect for most types of shade sail to hang your awning securely and easily. Easy to use on solid structures: This shade sail fixing kit is easy to use on solid structures such as drywall, concrete, brick, wood and cement walls, and will fit any type of square and rectangular shade sail to install your favorite relaxation spot with ease.