Usage Tips:QUALITY AND DURABLE - Made of good quality carbon steel, hard, sturdy and durable, with nickel plated surface, easy to catch rust and erosion, providing long service life.EASY TO USE - This screw set is easy to install, use a drill to drill a 5mm diameter hole, then you can install the 2 pieces on 2 sides, they can connect different items.REUSABLE - The threaded post allows you to open and reattach the part using a standard screwdriver.WIDE APPLICATIONS - The screw post is suitable for holding and the decoration of documents, books, scrapbooks, photo albums, etc., good supplies, especially for leather crafts.30 SETS - The amount of the screw is composed of screws and the top, they are compatible. Total 60 piecesProduct DescriptionAbout Increway:Major Categories: Tools & Home Improvement, Home & Kitchen, Some Mechanical Parts etc.Our goal: one-stop shopping for all kinds of repairs, replacements, and decorations you need in your daily life and work.For the home.Can be used for decoration, furniture repair and your DIY projects, they are essential for the family.Desk.Furniture office, household appliances, etc., also need these small parts to prepare emergency parts.VehicleCar repair, spare parts, these products will also be a good helper.MachineReliable quality product, can be used for mechanical maintenance and industrial applications.