It is an end mill that is ideal for reducing cycle time for side processing with high hardness steel.
What is AE-ML-H? 
 ・Carbide end mill for high-hardness steel  multiple flutes square type long type ( flute length = 4D). 
 ・Groove unequal spacing to suppress vibration, web tapered structure with varying thickness of core from the cutting edge to the shank, and DUROREY coating with high heat resistance & wear resistance and toughness enable stable machining of high-hardness steels up to ~70HRC.
・ number of flutes is 4 blades or 6 blades. (depending on blade diameter)
  OSG Official YouTube Channel
high-hardness steel carbide end mill AE-ML-H
  
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