Unlimited Oxygen M-20 Concentrator

Hit me up, under a year old.
https://www.youtube.com/watch?v=GSoJTiXf1gA
This is my setup, I need to move on to compressed tanks. I need to do faster work. I would recommend a setup like this to beginners learning how glass works. It's a slow process, but you definitely benefit from not having full power and actually seeing what is going on. Unless you're just that awesome ;) I have learned in my opinion, and now I need to step it up. PM for more info.

Pm sent

where are you located?

send pm if you still have the m-20. Want to know what your asking for $ & where your located.
Thanks