Features: brand new and high quality TOP Material: These screw buttons are made of high-quality stainless steel material, which is durable, rust-proof, corrosion-resistant, strong, and environmentally friendly. Package Contains: 40 face covers, 40 female buckles, 20 turnbuckles with a screw length of 15mm, 20 turnbuckles with a screw length of 10mm, 2 tools, and 1 storage box to meet your daily repair work. Suitable for Different Environments: They stand out in the harshest environments, such as windy, humid and sunny areas, indoor and outdoor environments. At the same for time, the socket is made of brass, which has strong wear resistance and can be used for a long for time. Storage Box: All buttons and tools are in a transparent plastic storage box, which can help you quickly organize and find accessories. Wide Range of Applications: these snap screw kits can be fixed on wood, plastic and fiberglass, used for boat canvas, tents, tarpaulins, upholstery, and fabrics. Package Includes: 40x Face Covers 40x Female Buttons 20x 15 mm/0.59 in Turnbuckles 20x 10 mm/0.39 in Turnbuckles 2x Setting Tools 1x Storage Box Specifications: Material:Stainless Steel Length:Face Covers: Approx. 14.8 mm/0.58 in Female Buttons: Approx. 13.4 mm/0.53 in note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.