Works with Trend's Ceramic Coated Deck Screws to install decking without visible fasteners. Features built-in spacers to ensure accurate board spacing, built-in clamp with adjustment for varied board widths and hardened screw guides.50� Hardened Screw Guides create a concealed deck fixing to prolong decking life and improve appearance.Built-In Board Spacers create a consistent and accurate 3.5mm, 4.5mm or 5.5mm gap between boards for drainage and expansion.90-150mm Board Width Adjustment to suit a large range of standard and non-standard boards.Quick-Release Clamping Arm secures the jig to the decking board for easier, accurate installation.On-Board Tool Storage for storing the driver bit.Includes hex shank Roberson no.1 bit driver.50� Hardened Screw GuidesThe 50� hardened screw guides refer to specially designed feature incorporated into a the Trend decking jig that facilitates the insertion of screws at an optimal angle. This particular angle ensures that the screws penetrate the deck boards at the right depth, offering enhanced strength and stability to the entire structure. These guides are made from hardened materials to withstand the forces exerted during the installation process and to prevent premature wear and tear.The Trend Self-drilling, solid steel screws are driven into the sides of the deck boards at an angle, allowing them to be hidden from view once the boards are installed. The result is a clean and polished deck surface without any visible fixings, which significantly improves the overall appearance and creates a seamless finish.The concealed deck fixing method has numerous advantages. First and foremost, it prolongs the life of the decking by minimizing the potential for water penetration and rot. With traditional fixing methods, such as nails or surface-mounted screws, water can seep into the holes or gaps created during installation. Over time, this moisture can cause the wood to deteriorate, leading to warping, split.