These are very common in aircraft work. They are the absolute greatest
to delivering a repeatable, controlled, and very accurate counersink. I
use them in woodworking and metal work. It is just professional when
flat head screws are exactly flush.
I believe the ones I have are micro stop. I don't have any of the bits
with a drill bit on them which would be a great feature.
Here are some:
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.