It's another of those accidental encounters that then becomes a "mission".
I have all the ratchets I need (
yeah, yeah, I know - here come all the bricks! lol) but occasionally I'll get one that just really impresses me. Like the old old Herbrand pearheads. I got a 1/2"er, and after cleaning and lubing it just works so slick you end up starting to use it more and more. Then you have to find the others. Finally found a 3/8" - it turned out as great as I'd hoped.
Same with this style of Williams. I have a 1/2" er that I'm trying to get to work, figured it'd be a bulldog of a tool. Maybe I should get a 3/8". Now I have one. It is also a sweet little ratchet.