Fair enough.
I'll slow it down for you and maybe that will help you with your comprehension.
I have a Zero Tolerance Knife.
It has a Titanium handle, and a blade made of steel.
It is also a flipper style knife.
It also has a detent hole.
Here is where it get's tricky for you....so read carefully....
Mine has a detent hole that is drilled EXACTLY LIKE THE ONE IN YOUR PICTURE. EXACTLY!!
I hope I didn't go too fast.
I have not experienced any problems with my knife due to this detent hole, but it is not a ZT0801 with S110V, so obviously that would make all the difference.
best
mqqn