Bassett MSE Series general-purpose single-end solid carbide end mill with square nose end geometry for steel, cast iron, non-ferrous materials. Corner radius. 10 percent cobalt submicron grain carbide substrate. 30 degrees right-hand spiral, right-hand cut helix designed for maximum chip clearance. 3-flute end mills provide a compromise between the chip clearance of a 2-flute tool and the rigidity and wear resistance of a 4-flute tool; especially useful for many slotting operations.