Here’s a modified version of your item list to eliminate duplication while maintaining the same meaning:
You will receive 100 concealed fasteners, which come with 100 deck screws, along with one square drive bit.
Installation tips: these decking fasteners are applicable for wood deck frames as well as grooved composite decks. Install the first row of hidden fasteners in the centre of each joist. But remember not to tighten the fasteners completely before installing the second row of fasteners
Spacing: thickness of middle raised buckle part is 6mm, providing enough spacing for installing composite decks with grooves
Material: hidden fasteners are made of high-density polymer materials, suitable for indoor and outdoor use. Stainless steel deck screws have been installed in deck fasteners to improve your installation efficiency. Enough drive bits to install as many fasteners as possible