ITEM NAME:120 Piece Metric Thread Insert Nut Type Tool Kit For Wood Furniture Zinc Al P8F7 120 Piece Metric Thread Insert Nut Type Tool Kit For Wood Furniture Zinc Al P8F7 Good quality materials:Metric thread,made of high quality zinc alloy, twice times higher than copper, more than 10 times higher than aluminum, processing difficult, complex production process, so that these threaded blades have the hardness of high resistance to rust, wear and corrosion-resistant environmental protection and aesthetic characteristics Usage and install: pre-drill a proper hole, screw in with internal hex tool; Unique self-tapping designed external thread, contribute to tapping, with good tensile resistance, install with hex key, tapered external threads makes it not easy to pull out caused by vibration Wide application: suit for soft woods such as pine, plywood, fiberboard, etc., such as ready-to-assemble furniture, drawer pulls, display case, and.Features of insert nut: These threaded inserts are inserted into a pre-drilled hole by screwing in, in that case the external protrusions bite into the wood, preventing the nut from either turning or pulling out.