The product is a boxes of DEWALT DMC14815HDG.5M connecting nails, each measuring 1-1/2" in length and 0.148" in diameter. These nails are made of steel and are designed for industrial fastening applications. With a mandrel material of steel and a high-quality construction, these nails are reliable and durable for various fastening needs. These nails are ideal for professionals in the construction and woodworking industries looking for a long-lasting and efficient fastening solution.