The 1-3/8 Core Drill features a 4-flute design and is made from high-speed steel (HSS), ensuring exceptional performance and durability. With a diameter of 1-3/8 inches, this drill is perfect for precision drilling in various materials, providing clean and efficient core extraction. The HSS construction offers excellent heat resistance, making it suitable for heavy-duty applications. This core drill meets industry standards and is compatible with standard drill chucks, making it an essential tool for professionals in construction, metalworking, and other industrial sectors.