Hand auger / hand spinner Hand augers are useful for clearing sink and bathtub drains.They are unsuitable for sending through flush toilets, because the wire might damage the bowl; also, flush toilets have relatively large drain pipes in which the narrow snake can be become tangled. (A 1?4-inch cable, for example, should never be used in a drain with a calibre of more than two inches.) Closet auger / toilet auger The closet auger (named after water closet) feeds a relatively short auger through a hook-shaped length of metal tubing. The hook shape makes it easier to feed the auger into the toilet.
A plastic boot on the end of the auger protects the finish of the visible porcelain.
Since most toilet clogs occur in the trap built into the bowl, the short cable is sufficient to break up or retrieve the greater majority of clogs. Źródło: https://en.wikipedia.org/wiki/Plumber%27s_snake
The houses usually they exchange seals and pipes, which has already gathered a lot of dirt and hair and suds.Similarly, in flats, where sometimes you also need to fix the toilet flush.
So they can save some money and demonstrate their efficiency in front of family.
But keep in mind that the performance of such work will be possible only if equipped house there are small seals and hydraulic tools..