Thanks. My key objective now is to remove 30-35ft of 1/2" stuck Auger in my upstairs bath sink drain.Last summer our shower drain plugged up. The plumber had a battery operated air plunger. He filled the drain with water, then stuck the nozzle in the drain. Whoose the drain was clear. We have a grey water system for the shower and sink drains. They go into a basin about 100’ from the house and cottonwood trees use the water. I was standing at the pipe outlet outside when he hit the drain with the air plunger. A flood of nasty black/grey water came rushing out and the drain was clear. He made some easy money for sure. This might be worth a try.