20Pcs Carbon Steel Hex Socket Zinc Plated Carbon Steel Material Drive Head Insert Nuts Threaded for Wood Furniture

HIGH DURABILITY: These insert nuts are made from high quantity zinc plated carbon steel for durability and rust SIMPLE INSTALLATION: Insert nuts are advantageous over barrel nuts and T-nuts, because they can be installed from one side of the workpiece EASY TO USE: Screw-in insert nuts have an external thread and hex socket drive and are screwed in with a hex key wrench MULTI SIZE: There are screw-in insert nuts in different sizes and take different screw sizes that you can choose for your project PRACTICAL: The pre-drilled hole must be as deep as the length of the insert nut plus any portion of the bolt that may be screwed past the end of the nut in the work piece