Cobra Carbide 24436 Micro Grain Solid Carbide Regular Length General End Mill, TiAlN Coated, 4 Flute, 30 Degrees Helix, Square End, 12mm Cutting Length, 3.0mm Cutting Diameter, 38mm 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 aluminum nitride coatings become self-lubricating when used at very high speeds, making them ideal for cutting without coolant ("dry machining") Round shanks allow use with a wide variety of toolholding systems Center cutting geometry Design for increased chip removal rate