Wide Application - All in 1 Universal Rectangle/Square Sun Shade Sail Hardware Kit includes 2 turnbuckles, 4 pad eyes & 2 carabiners Durable in Use - 304 stainless steel hardware features rust-resistance & wear-resistance Fine Adjustment - Carabiner for fixating the sail, turnbuckles to adjust the length Stable Construction - Pad eyes for hanging carabiner & turnbuckle; Plastic anchors reinforce screws Easy to Assemble - Hook and carabiner are easier to take down while not using in inclement weather