Cobra Carbide 23382 Micro Grain Solid Carbide Regular Length General End Mill, TiN Coated, 4 Flute, 30 Degrees Helix, Ball Nose End, 3/4" Cutting Length, 1/4" Cutting Diameter, 2-1/2" Length (Pack of 1) Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems Titanium nitride coatings add a hard layer of gold-colored ceramic to the surface that extends tool life and permits faster cutting speeds than uncoated tools Round shanks allow use with a wide variety of toolholding systems Center cutting geometry Designed for milling, slotting, profiling and trace milling