Features: - Made of 316 stainless steel, it is extremely durable, sturdy and rust-proof. With high load carrying capacity and long service life, Kupton shade sail hardware kit is an ideal choice for your outdoor shade sail hanging. - Adjustable Turnbuckles to create extra tension to make your sails get tight in installation. You can choose how far your sail shade is from the wall/ post/ point to which it is fixed, length from 5" to 7". - Plastic Expansion is specifically configured for screws. The screws will work more firmly with plastic expansion than directly attached to the wall, effectively preventing the sun shade sail from being blow away by rapid winds in bad weather, because the plastic expansion enables the tensile force to come from the inside of the wall rather than the surface. Specifications: Material: Steel Package Included: 1 x Shade Sail Hardware Kit Notes: 1. Manual measuring, please allow 1 ~ 3mm error, thank you. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.