IRWIN 10501994 drill bit Twist drill bit 1 pc(s)Speedhammer Plus Drill Bits 2 Cutting Edges Designed for exceptional fast drilling in brick, block, masonry, concrete and granite 20% faster! Patented, unique single flute Ensures efficient, speedy removal of dust and lower vibrations. 28% greater capacity meaning more efficient waste removal Patented extra short drill bit head Head takes 80% of the workload, ensuring higher durability and speed. Clears drilling dust directly into the flute, reducing