I bought this to unclog flexible plastic pipes with a deposit that dates back 30 years. I can not tell you the blocks that are out. This hose is mounted without problems and without adapter to a pressure washer that I bought at Lidl and was effective. If really clogged pipes on meters as was the case, I advise to pass first a classic ferret to quickly zoom hole and then move very gently hose and nozzle off the blocks.
