The Grip-Rite 2-1/2 in. Masonry Tempered Hardened Steel Nail Flat Head 1 lb. is a top quality product that is perfect for your masonry needs. It is made of tempered hardened steel for maximum durability, and has a flat head for a sleek, professional look. This nail is sure to get the job done right, and is an excellent choice for any masonry project.