The Micro 100 Square End Mill Center Cutting is a high-performance end mill for milling a variety of materials. It features a square end design for milling 90-degree shoulders and corners. The center cutting design allows plunging into material. It is made of solid carbide for durability and has TiAlN coating for heat resistance and lubricity. Diameter sizes range from 1/8 inch to 1 inch and overall lengths range from 1 inch to 4 inches. This end mill is ideal for slotting, side milling, and facing on materials like steel, stainless steel, cast iron, aluminum, copper, brass, bronze, plastic, and graphite.