ZJYX K14/50 Caliber Concrete Nails are strong fastening nails designed for construction, installation, carpentry, and general building work. They are made for use where a firm and secure fixing is required on suitable hard surfaces such as concrete, masonry, wood, and other building materials. Each nail has a solid metal body with a shaped head that helps provide a secure hold after driving. The K14/50 size is clearly marked on the package, with each box containing 100 pieces. Their durable construction helps resist bending during proper installation and provides reliable fastening for different repair and construction tasks. These nails are suitable for professional tradesmen, builders, carpenters, installers, maintenance workers, and DIY users. They are easy to store, carry, and organize, making them a useful addition to a hardware