I have a house on the place that is about 70 years old. When Dad had it built Cast iron sewer pipe was about the only thing available. we have had plugged lines for the last 25 or so years. The main line stopped up. I called a plumber. A camera down the line indicated a blockage of some kind. For this he said we have to use our Hydro Jet, and blast out the pipe. A hour later the Hydro Jet truck pulls up. It's a small van. When the van door was opened up ,I was expecting to see a big diesel engine with a huge pump to blow out my line. What sites in the back of the van is a pressure washer. Connected to a 1/4 in. line with a nozzle to pressure out my line. What a disappointment . Today I purchased the line and fittings for 75.00 from Amazon. All I need is to connect the line to my pressure washer. Now I can do my own hydro blasting, and save several hundred dollars. Stan