Shit, it is offensive! I work in a sanitary store. Yesterday evening, 2 puppies of 10 years old come in, consider the 32nd (the thinnest) sewer pipes, ask businessfully what length, I tell them everything in detail, decide to take a half-meter. They get a bunch of little things - it is missing. They ask, and which other tubes can you advise? I show -metalloplast PPRK, PND. Then I ask, and you why? We don’t care about them, they answer.