50 HRC 2/3 Flutes Aluminum Processing End Mill 1) cutting 45 /55 degrees aluminum 2) good performance 3) MG carbide material 50 HRC 2/3 Flutes Aluminum Processing End Mill Suitable for Copper .Aluminum ,Aluminum Alloy, Copper alloy ,Nickel allay,Titanium alloy and Plastic processing If you have any need ,please contact us at you feel free!