Alfa Tools HED121 3?8? Hole Enlarging Core Drill

The Alfa Tools HED121 is a premium 3?8-inch (0.3750″) hole enlarging core drill designed to expand existing pilot holes with precision and efficiency. Manufactured from high-speed steel with a black & gold surface finish to enhance lubricity, it features 4 flutes, a 1?4-inch minimum starting hole requirement, a 1-7/8″ flute length, 4-5?16″ overall length, and a 3?8″ shank with 3 flats for secure gripping. Ideal for structural steel, framing, and heavy fabrication, this core drill allows fast and accurate enlargement of holes without reaming.