Concrete screws are ideal for use in concrete, brick or block base material. The threads of these screws actually cut threads into the base material, providing excellent holding values.
Each box of 100 screws comes with the proper size masonry drill bit required for proper installation. Concrete screws are available in: 3/16" Diameter & 1/4" Diameter Hex washer head & Phillips Flat Head (countersunk)
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