Lee is the only mfr I know of that makes the Factory crimp die (collet). Don't know if it's a stock item now, when I got mine a couple years ago, it was through thier custom (rifle)die process. I had to send them an empty case with a bullet seated into it, and a couple weeks later they sent me back the die.
They're nice as 1) brass length isn't critical, and a good hefty crimp can be applied without worrying about crushing the case.
I do know of many others though that use a traditional roll crimp.