Niagara Cutter N69095 High-Speed Steel End Mill, General Purpose, TiCN Coated, 2 Flutes, Double Square End, 7/16" Cutting Length, 3/16" Cutting Diameter Two flutes offer better chip-carrying capacity than end mills with more flutes, enhancing the tools ability to remove material Double-end square nose end mills (also called square end) create sharp, unrounded cuts and have cutting edges on both ends for longer tool life Titanium carbon nitride (TiCN) coating lubricates the end mill for high-temperature stability and offers better abrasion resistance than TiN coating High-speed steel is compatible with a variety of materials Center-cutting design allows the end mill to plunge into material like a drill bit while also performing conventional surface milling