J. Meinlschmidt Hydro Jet M1

Although this product is simply a hose, connector, and spray head, it works very well. I use it to clean my tubas, where internal cleaning can be difficult because of the weight and size of the tuba. I place my tuba stand in the shower cubicle. Put the tuba on its stand. Attach this product to the shower's water supply. Push the hose head down the lead-pipe and flush the tuba with warm water for several minutes. Stop. Remove a slide from the tuba. Repeat. Repeat.... Much cheaper than paying someone to give the tuba an ultrasonic bath. Useful.

Very please with this product. Quick and easy way to clean my euphonium. A bit expensive but worth the money.

I purchased this to clean the inside of my tuba. It can be used by replacing a standard showerhead.
Increasing water pressure might make it cleaner, but this has two drawbacks.
1) When using it on instruments with rotary valves, you must keep the water pressure low enough to prevent water from entering the casing.
2) If the water pressure is too high, the black tip part (the part that disperses water in multiple directions) will fly off and get lost. I had to crawl around on the ground looking for that part ;)