The tubing was simple aquarium tubing, which you can get most any pet supply or feed store. Be sure to get the more rigid plastic, not the soft pliable type. I'm not sure if there is a thread on here about this procedure specifically. My daughter is a vet tech, who spent years at a wild bird rescue, so it came from her experience and training. The placing of the tube is just like if you were tube feeding a bird, it's just that instead of injecting you're putting the empty syringe in and pulling out the plunger, sucking up into the tube the fluid and gunk from the crop. It won't pull out wads of grass though, but it helped break up the wad. It takes two because it can be hard to hold the tubing, pull the syringe plunger and hold the bird but it's much safer then vomiting the bird.