150 Pack 3-1/2" Fluted Concrete Nails - Heavy Duty Masonry Nails for Concrete, Brick, and Block - Perfect for Construction, DIY Projects, and Home Repairs

For fastening lumber to any type of concrete or masonry work. Predrilling may be necessary in some applications. For best holding power, choose a length that will penetrate ¾” into the masonry. Solid blows at right angles provide the best results.