1.7 Sizes / 125 nuts: Nut kit contains 125 pieces of nuts, 7 sizes, M4 * 10mm, M5 * 10mm, M6 * 10mm, M6 * 15mm, M8 * 15mm, M8 * 20mm , M10 * 25 mm. Packed in storage box, you can get it quickly^ 2. Furniture Repair: If you need to renovate some wood furniture and are going to add a few feet to a newly purchased cabinet, then insert nuts are perfect for you.^ 3.Easy to install: Threaded nuts are relatively easy to install. Drill a hole of the correct size where the hex nut is to be inserted. Use a hex wrench to screw the nut into the hole. External threads hold the nut and prevent it from loosening due to vibration.^ 4.Widely applicable: It is very suitable for replacing the threaded nuts where there are defects in the wood screw holes. Suitable for carpenters, craftsmen, homeowners to repair cabinets, floors, wooden toys, construction work and other cork, fiberglass.^ 5.Material: Hex screw inserts are made of zinc alloy, which is durable and resistant to oxidation and corrosion. They can be used for a long time in hot or cold conditions. Suitable for soft wood like pine, plywood, fiberboard etc., very suitable for combination of furniture.^