We dedicate an amount of resources for working on cutting tools more than most people might believe, but you're right it's mostly private label.
The answer to your question mainly comes down to warranty. People will invest in very good and perhaps the best cutting tools and extractors out there and the price that commands when they are covered by lifetime warranty and that process is as easy as your dealer stopping by.
While Astro has lifetime on hardline hand tools, we don't have a category or process in place for lifetime cutting tools as it's very transactional for us with shipping and even the user with the time for that single 0.1lb replacement to arrive.
For 1/8" burrs we used to way back in the day, but these days we don't for Astro or any other brand. We can't lifetime cover them for a tool truck because if you're not skilled with 1/8" burrs you can kill 12 before lunch without remorse, I won't sign us up for that

And under Astro for the same reason, it's very easy to get 1 star reviews from an honest yet perhaps not very experienced 1/8" carbide user who also breaks their 1st one.
We sell millions... with an s individual cutting tools total per year, and made a big effort this year to develop some of that in new very cool looking and new patent pending performance ways I'm sure many of you will notice in 2026, but yeah not so much under Astro I'm afraid for these reasons.