These Halex Concrete Nails are the perfect solution for securing carpet metal. With a head diameter of 5/8 inches and a gauge of 10, these nails are made of hardened steel and have a countersunk head style. The M-D Building Products 19777 model is made in the United States and comes in a pack of 2, each weighing 1 lb. These nails are measured in inches and have a metallic finish. Ideal for home improvement projects, these nails belong to the Nails category.