Turf nails are like the "glue" that hold the whole project together. These six inch non-galvanized nails will expand over time to further secure your turf. Nails when used properly, will give you one more reason to be worry free about your new lawn. Material - Constructed with non-galvanized steel. Length - 6" long. Weight - 12.5 lb box, 25 lb box, and 50 lb box. Count - 12.5 lb box = 150 nails, 25 lb box = 300 nails, and 50 lb box = 600 nails. Recommended Usage - Install nails every 6" along the edge and drive them down three quarters of the way.