My family has had 3 types of Rife machines over the last 20-years. My parents have the hand held tube with rays that have virtually no feeling involved except a little heat. I have an older model that I hold metal handles and actually feel the electrical pulses in my hands.
We thoroughly believe in the healing powere of the rife machines. I can't even list the conditions we have sucessfully treated but the common cold or flu prevention settings get the most use. Parasites are the second most common use for us. Viruses are the primary targets of rifing. We have had no need to treat external tumors but if there is a setting for that with the machine you purchase then go for it.
Once you try it you will wonder why every household in America doesn't have one. I am so grateful that they are now easily available. Can you imagine what a black market product it was 20-years ago?