Connexion Vendor Masonry Drill Bit, 1/4 in Drill Bit, 6 in Overall Length, 2 Flutes, Slow Spiral Flute, 1/4 in Shank, Straight Shank, Carbide Cutting Edge, Carbide, Black Oxide, Applicable Materials: Hard Brick, Sandstone, Bluestone, Terracotta Block and Hard Concrete
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