YG-1 EMB12 Carbide Square Nose End Mill, Vibration Resistant, AlTiN Monolayer Finish, 4 Flutes, 1.5" Overall Length, 0.125" Cutting Diameter, 0.125" Shank Diameter Variable helix angles combined with unequal flute spacing reduces vibration, improves surface finish, and provides higher cutting capacity and material-removal rates compared to conventional end mills Suitable for machining alloy steel, cast iron, stainless steel, titanium, nickel-based alloys, and most materials with a Rockwell hardness less than C40 Four flutes produce a better finish than fewer flutes Aluminum titanium nitride (AlTiN) coating lubricates the end mill for high-temperature stability and abrasion resistance at high cutting speeds, offering better heat resistance than TiN, TiAlN, and TiCN coatings Carbide can run at higher speeds than high-speed or cobalt steel, resisting wear and high cutting temperatures