High Quality: Made of high quality stainless steel for installing rectangle shade sails, durable, rust-proof, sturdy and safe. M6 Rectangular Set: Includes 4 wall brackets, 8 carabiners, 4 tension screws and 16 screws, suitable for all rectangular awnings. Practical: The awning fastener set is easy to use and perfect for most shade sails to hang your awning securely and easily. Perfect Tension: The tension screws ensure optimum tension for your awning.