I’ve seen those but I can’t think of a time I needed them. Always been able to get into areas with a couple wobblies or a gearwrench or stubby ratchet/flex handle.
Only thing I’d like to have is a real thin headed ratchet.
Why would they not make one with a swivel head? Only my 1/2" stuff doesn't have a swivel head. I wish I would have waited to buy gear wrenches until they can out with a swivel head.
I have a set in metric and standard. That tool never broke once on me and I'm not easy on tools. I've broken many snap on tools that the salesman has never seen anyone break. I got my set through snap on, but you can get them on Amazon for a little cheaper.