The INGERSOLL 4" FACE SHELL MILL INDEXABLE CARBIDE 25163.... is a high-quality milling cutter designed for metalworking needs. With a cutting/head diameter of 3 inches and a shank diameter of 1 inch, this shell Mill is perfect for precision cutting. Made with durable carbide inserts and crafted in the United States, this product ensures long-lasting performance and reliable results in CNC machining and manufacturing processes. The set includes 8 inserts, providing versatility and efficiency for various milling projects.