Blitz180,
Welcome to GJ and this thread! Nice to see another person posting from Japan. I think it's only you and another member, GBH, that posts from the "land of the rising sun".

It's another one of those often overlooked small things that just makes your job go easier.
Some more SEK/Pro-Auto tools.
1/4 and 1/2 drive round head ratchets. These use the standard Facom style pawl mechanism (72T). The directional switch works like some gearless ratchets, where you have to use both hands to change direction.
They both come with built-in thumb wheels. The idea is good, but being so close to the head makes for a bit of a awkward operation if used one-handed.
COO should be Japan as SEK has been making them for decades (not this model, but 72T round heads). They were at one time OEM sources for a few American tool brands like Truecraft, Oxwall, Wards, and a couple other I can't remember.
They are decent ratchets.
SEK's import brand is Pro-Auto. COO is Taiwan.
I purchased a single 12mm ratcheting flarenut wrench some years ago and I've used it a few times now without it falling apart on me yet, so decided to get a 11mm. This time I got their flex head version: