IEY1672 Features: * Double flute masonry bits are ideal for drilling in brick, cinder block, and tile * Drills twice as fast as standard masonry bits * Carbide tip minimizes wear and extends the life of the bit * For use in corded and cordless rotary drills only * 1/4"" shank diameter * 2-3/4"" flute diameter * 13"" overall length * Carded Dimensions: * 1"" diameter