The package contains 25 nuts. High quality material: The screw nuts are made of die-cast zinc alloy. The hexagonal thread inserts are hard, durable, and rust-proof. Easy to use: The boxed threaded nut combination tool kit is easy to use and carry. Just drill a suitable size hole and install with a hex wrench. The taper external thread helps resist loosening due to vibration. How to use: Using an insert nut, pre-drill a suitable hole and tighten with an Allen tool. Unique self-tapping external threads make installation easy and provide strong, permanent threads for wood and wood-based substrates. The perfect kit: Wood thread inserts for pre-molded connectors in wood furniture. Standard inner hexagon head, smooth and flat, with flange thread structure for stable performance. Wide application: These hex nut fasteners are ideal for replacing bolts where wood screw holes are damaged. Suitable for soft woods such as pine, plywood, fiberboard, and similar materials. Works well in furniture assembly.