• Variety of sizes: Contains 180 pieces distributed in sizes M4x10, M5x10, M6x10, M6x13, M6x15, M6x17, M6x20, M6x25, M8x15, M8x17, M8x20, M8x25, M10x20, and M10x25. • High-quality material: Made of carbon steel with a nickel-plated surface treatment that offers resistance to corrosion, rust, and long-term durability. • Easy installation: The inserts screw easily into pre-drilled holes using a hex key, ensuring a firm fit from a single side of the piece. • Stable design: Equipped with internal and external threads that provide high resistance to torsion and vibration, preventing them from slipping after installation. • Versatile applications: Ideal for the assembly and repair of wooden furniture such as cabinets, sofas, beds, chairs, and other household objects. • Organized storage: The set is delivered in a storage box to facilitate the classification and transport of the components.