Strange drill bit

formatting link
formatting link
I found this bit at the dump. It has a tapered shank & is marked "star
- hammer - twist". It has a chisel point, not a cutting lip, so it
clearly does impact cutting & hence (?) is for masonry. But it is not
carbide tipped! It has some rust, so it can't be solid carbide, can it?
So, I guess the question is: is there some steel alloy that is used for
masonry impact drilling?
Reply to
Bob Engelhardt
Loading thread data ...

PolyTech Forum website 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.