Shade&Beyond Rectangle Sun Shade Sail for Patio Lawn Deck Garden Pergola (10'X13') High Quality - This TRIANGLE sun shade sail installation kit is made of high quality 316 marine grade stainless steel. Grade 316 stainless steel is extremely strong and resistant to the elements. Hardware Kit Includes - Shade&Beyond shade sail accessories set includes:Turnbuckle x 2pcs, Pad eye x 3pcs, Snap Hook x 1pcs, Screw x 12pcs, Plastic expansion x 12pcs. Adjustable Turnbuckle- The sun shade sail kit has adjustable turnbuckle to create 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. Plastic Expansion- Our sail shade hardware kit has configured extra plastic expansion to fit screws. The screws works more firmly with plastic expansion rather than directly attached to the wall. Wide Application- Shade&Beyond TRIANGLE sun shade sail hardware kit is great fit for installing TRIANGLE shade sail.