80Pcs 1/4"-20x15mm Hex Nut Inserts Wood Threaded Fastener for Furniture

80 pieces 1/4"-20 furniture screws threaded inserts for wood furniture. Comes with 9.0 mm white steel twist drill and 6mm hex spanner. | Internal thread insert type: 1/4"-20, it is not a metric nut, the thread inside the nut is different, match this type when selecting accessories | Material: High hardness and high quality carbon steel | Usage: Use the matching bit pre-drill /drill a well-sized hole (depth is 1-2mm longer than furniture screw), then use a proper 6mm internal hex tool to screw in. Tip: If the furniture wood is with high-hardness, please enlarge the screw hole. | Applications:These furniture screws are wear-resistant . Suitable for furniture hardwood/ solid wood, for furniture combinations.