The Micro 100 Square End Mill Center Cutting 14T269 is a high performance square end mill designed for milling a wide range of materials. This 1/4" diameter, 2 flute end mill has a 1/2" LOC and is made of solid carbide with TiAlN coating for increased tool life and heat resistance. It features a center cutting design allowing plunge cuts and drilling operations. Recommended speed is 25,000 RPM with feed rates from .001-.004 IPR. It is well-suited for slotting, side milling and facing on steels, stainless steels, cast iron, aluminum and other non-ferrous metals.