For rotary drilling in concrete, brick, and masonry. Fast spiral, double flutes quickly clear material from hole to grind masonry down as a user cuts through it.. Zinc finish. High quality bit for many uses.
Diameter: 7/16 In.
\nLength: 6 In.
\nFlute Length: 3.3 In.
\nShank Diameter: 3/8 In. Reduced