【Good variety in different 4 sizes】The 4 sizes' concrete Nails ( 1 inch, 1-1/2 inch, 2 inch, 2-1/2 inch) have a short or middle or long size which is perfect to handle various projects.40pcs concrete nails/row, 20 rows/box, 240pcs for each size, total 960 pcs. 【Galvanized steel】Galvanized surface treatment makes the angled finish nails keep the strong rust & corrosion resistance . 【Strong penetrability】The T-shaped head and Chisel point design with strong penetrability lets you use nails very easy,and you will have no jams and buckles, and interruptions. 【Wide applications】It is a ideal choice for for concrete nailing, truss building, construction framing, finishing boards, starter rows, top nailing, and furniture assembly. 【Our Promise】Please let us know if you are not 100% happy with your purchase., Manufacturer: SimCos