I do not use anything in my serving lines that is not stainless or food grade beer line. Shanks that are chrome plated are very nasty inside the bore as the plating does not go into a hole at all. The beer faucets have some of the same problems if the plating is not well done. Shanks with the nipple are "Chrome Plated" as a rule. It's you and your friends that will be drinking the beer that comes out of your faucets so be careful. Don't forget clamps for the beer line.
For every faucet you need a shank and nipple assy which includes the nipple, sealing washer and nut and a Corny beer out connector(Barb type).
5 to 6 feet of 3/16 beer line.
For the CO2:
5 feet of 1/4 or 5/16 CO2 line(depends on barb size).
Corny keg connector for CO2 in.
CO2 bottle (as big as you can afford).
CO2 regulator.
A tray to catch the beer overflow.