The Grainger Approved Square End Mill Single End Carbide is a milling cutter with a square end for machining slots, keyways, pockets, and contours in aluminum, brass, bronze, cast iron, steel, stainless steel, titanium and other materials. It has a 1/2" shank diameter, 1-1/2" overall length, 1/2" max depth of cut, and 1/4" corner radius. The carbide cutter is made of micro-grain carbide for wear resistance and heat resistance. It has a bright finish for visibility and is balanced for smooth running. This single end mill is designed for high speed machining in both clockwise and counterclockwise directions.