This kit includes 18 pieces of 1/4"-20 tri-groove nuts along with one #20 tri-groove socket tool, providing a complete installation solution for compatible tri-groove fasteners. The specialized tri-groove nut design features a three-groove profile that requires a matching #20 installation tool for proper installation and removal. The included #20 socket tool is precision-machined to fit compatible tri-groove nuts, providing secure engagement during use. The socket tool is manufactured from durable carbon steel, while the included nuts are made from zinc alloy (Zamak5) for strength and corrosion resistance. Featuring a standard 1/4"-20 thread size, these nuts are compatible with a wide range of bolts, studs, and threaded rods commonly used in commercial, industrial, maintenance, utility, and equipment applications. Suitable for enclosures, utility equipment, signs, panels, gates, storage racks, machinery, and other installations requiring specialized tri-groove fasteners. Whether you're a maintenance professional, contractor, facility manager, or DIY enthusiast, this kit provides a convenient solution for installation and replacement projects.