Superb Material: Our flat head self-tapping wood screws are made of outstanding carbon steel material with smooth edges and high hardness, which is corrosion resistance, rust resistance, not easy to damage or break, sturdy, and durable for long time use. Easy to Use: The deep and clear thread can easily penetrate the wood and plastic and ensure a secure hold, and not easy to deform and slid while using. These countersunk head screws are ideal for using in confined areas where the head needs to be flush or below the surface. Easy to Store: These wood screws fasteners assortment kit includes some common metric sizes, all stored in a plastic box for protection, avoid them mixing, is organized for you. different sizes in different compartments for easy transport and storage. Widely Used: The self-tapping screws are widely used in professionals, amateurs, home, and office appliances, workplace fasteners, electrical products, communication equipment, machinery, furniture, ship assembly, DIY arts, etc. Package Includes: You will receive 400 pcs deck screws, the size of M3*(6mm/8mm/10mm/12mm/16mm/20mm/25mm/30mm), 50 per size, and 20 pcs M6 plastic anchors, a total of 420 pcs, a very essential hand tool for the family, and perfect to replace a lost or broken screws.