1/64" End Mills | McMasterCarr
WEBJan 17, 2023 · Carbide Square End Mills for Carbon Fiber, Fiberglass, and Graphite. 3 Flute. These end mills have a diamond or diamondlike coating for machining abrasive material, such as carbon fiber, fiberglass, and graphite. Made of solid carbide, they are harder, stronger, and more wear resistant than highspeed steel and cobalt steel for the .