Culvert jet for pipe cleaning. 3:08 video:
https://www.youtube.com/watch?v=wq7tw36XYoQ
Previously:
https://www.homemadetools.net/forum/...225#post141833
https://www.homemadetools.net/forum/...427#post131603
https://www.homemadetools.net/forum/...431#post122276
