TubeNet

I've seen that model of brush. I heard it leaves scratches.

I like this version of the brush. It is semi-automatic and does a better job that the previous model, the K9, which was also noisier.

Does it have the liquid cleaning option? If so does the supplied liquid help clean the tuba?

Looks like the brush removed the red rot from your tuba.

K

I understand that those brushes are really effective if you pour in a bucket of water and QUICKLY apply a plastic garbage can lid...

they are very tasty if cooked properly !