ProFIT 0029193 Nail, Fluted Concrete Nails, 16D, 3-1/2 in L, Steel, Brite, Flat Head, Fluted Shank, 25 lb

Masonry nails are hardened nails designed to be driven into concrete or the mortar used to hold together bricks or cement blocks. This rigidity also lends masonry nails to a wide variety of installations ranging from attaching plywood subfloor to securing carpet tack strips.