230 Pieces Zinc Alloy Hex Threaded Insert Nuts Threaded Inserts Insert Nuts External Thread M4 M5 M6 M8 For Wood Furniture Nut Tool Kit The product is shipped based on the color or size of the main image of the product page. Material: The inner hexagon nut is made of carbon steel color galvanized, high hardness, not easy to deform, corrosion resistance, good fixing effect, and can be easily screwed on. Features: The nut has high strength, impact resistance, and is more stable in connection with wooden furniture, effectively preventing looseness, and can be firmly fixed for a long time. Dimensions: 8 different screw sizes, M4*10mm*80, M5*10mm*60, M6*10mm*30, M6*15mm 20, M6*17mm*20, M6*20mm*9, M8*20mm*5, M8 * 25mm * 6 (inner diameter * length *quantity). Safety tips: Drop wood glue into the hole (on the side wall), insert the nut and rotate it several times, drop the glue on the thread of the nut, and then tighten the nut completely to make it flush with the wood, flat, and as dry as possible. Scope of application: Suitable for soft wood such as pine, plywood, fiberboard (a small hole must be drilled before installation).