The Micro 100 Square End Mill Center Cutting 14M454 is a square end milling cutter with a 1/2" shank diameter, 1/2" cutting diameter, 2" overall length, and 4 flutes. It is made of solid carbide and has a center cutting design for plunge cuts. The square shape allows milling of shoulders, slots, and right angles. It has a TiAIN coating for heat and wear resistance. Recommended speeds are 60,000-80,000 RPM with .001-.004" chip load per tooth. It is manufactured in the USA by Micro 100 Tool Corp.