The Irwin Rotary Masonry Drill Bit drills fast and clean in concrete, brick, block, tile, slate, and plaster. A brazed tungsten carbide tip with diamond-ground cutting angles delivers aggressive penetration, while the slow-spiral flute clears dust and debris quickly. The nickel-plated finish reduces friction and resists corrosion.

• Diameter: 7/16"
• Overall length: 6"
• Tungsten carbide tip, brazed for durability
• Diamond-ground cutting angles for aggressive cutting
• Slow-spiral flute for fast debris removal
• Nickel-plated finish for smooth operation and corrosion resistance
• Reduced shank fits standard 3/8" drill chucks while delivering larger-diameter cuts
• For use with rotary or hammer drills in concrete, brick, block, tile, slate, and plaster

Tip: For best bit life, set hammer drills to hammer mode and let the bit do the work -- apply steady pressure without forcing. Withdraw periodically to clear dust from the hole.