5dの穴深さで先端をフラット形状にしたい。＜adf・adfo＞ | オーエスジー

I want to make the tip flat with a hole depth of 5D.  

After machining a 5D hole with a normal drill with a tip angle, only the tip angle is machined with ADFLS-2D (a type with a long neck). (The step amount is 0.2D)