ok, i thought u were ragging on me. i know what cryo is man. my best friends dad works for air liquide and has a 500 lb tank in his garage. so basically, do it, if its free. its a ncie thing to have, especially, for FREE. can do nothing but help correct? at least, thats what i get from reading. this isnt a kit, this is a real cryo job, in a huge tank, the right way