Irwin 5026006 Rotary Percussion Masonry Drill Bit, 5/16 In Dia X 4 In Oal

Product Features

• Type:Rotary Percussion
• Diameter:5/16 in
• Flute Type:Slow Spiral
• Point Type:Diamond Ground
• Cutting Edge Material:Tungsten Carbide
• Applicable Materials:Concrete, Brick
• Tungsten carbide tip for durability in concrete and brick
• Deep single flute removes drilling dust fast
• Diamond ground tip with more aggressive cutting angles for increase drilling speed
• Changed back angle from 10 - 24 deg
• More aggressive 26.0 mm flute pitch
• Tested other carbide grades, current grade performed the best
• Optimized flute geometry for fast dust removal