Upgrade your deck with these 1250 PIECES hidden deck fasteners for composite decking boards. Crafted from high-density polymer materials, they are durable and corrosion-resistant, suitable for both indoor and outdoor use. The package comes with 1250 fasteners with preset screws, 2 drive bits, and a stand-up tool, covering 625 sq. ft. of deck installation. Metal deck screws are integrated for enhanced longevity and efficiency. These fasteners not only secure the deck boards firmly but also provide the ideal spacing, with black-coated screw heads for a sleek appearance. To install, align the first row of fasteners at the center of each joist against the first board and partially tighten. Then insert the second board and install the second row. Finally, fully tighten the first row. Ideal for anyone looking to build a beautiful, long-lasting deck.