Our toilets flush (all the
Le BigMacs) the otherway, too.
We have a superb new uber-metric range of tools, based on a unit of measurement known as a "chromon". You see, 1 inch is equal to 45.55 chromons in length, so if you need a 3/8" drive, then you should look for a 17.08 cr fitting... but (infuriatingly) they're made in random incremental sizes from -0.12 all the way to 550 or so.