What is it for?

[Ironman]

I have a bunch of these and have given some away. A thou over 7/16" and solid carbide, I thought they were a reamer. Being carbide they have to be in something stable like a mill or they chip if you are drilling with them.

 

[Susquatch]

Why makes you think they aren't reamers?

 

[Ironman]

Because they come to a point and can drill, and they are slightly tapered for a bit. I could be wrong, they were sold to me as carbide drills. Carbide would be too brittle to ream ell and all my reamers have many more flutes.

 

[Susquatch]

You might not have any, but there are lots of 4 Flute reamers around. The point may well allow for drilling, but it would also facilitate a quick start. Might be very well suited to reaming non-chip metals like cast iron or bronze.

 

[Ironman]

You might not have any, but there are lots of 4 Flute reamers around. The point may well allow for drilling, but it would also facilitate a quick start. Might be very well suited to reaming non-chip metals like cast iron or bronze.

That makes sense to me

 

[phaxtris]

looks like a reamer to me, point may be to help starting in more of an undersized hole than normal

 

[Larry_C9]

May have been made for some kind of production drill/ ream operation to enable it to be done in one process.