A couple of those fittings are definitely not normal hardware store stock, and the tubing is 3/16" OD copper tube, also not a normal stock item at most HW stores. That kit is actually worth the price and then some. DO NOT substitute 3/16" OD steel brake line for the copper tubing- - - -it will rust out.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!