Carbide tip design maximizes carbide surface contact for longer bit life. Four flute design cleans debris out for fast, efficient drilling. Three flats on shank eliminate bit slipping in chuck. For use with electric or cordless hammerdrills.Used for drilling holes in brick, block, concrete and masonry up to 1" diameter. Used by electricians, mechanical contractors and general contractors for fastening applications such as conduit, pipe, duct work, etc.

• Strong core: Tapered core for bit strength and maximum durability, especially when drilling deep holes
• Aggressive material removal: Two stage flute design with variable helix pattern allows for efficient debris removal
• Clean, round holes: Two sharp cutting edges for true holes
• Wear mark indicator: For accurate diameter of holes