ProFIT 0029098 Nail, Fluted Concrete Nails, 4D, 1-1/2 in L, Steel, Brite, Flat Head, Fluted Shank, 1 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.