It comes with brass garden hose inlet and outlet fittings, not plastic.   It is filled with virgin DI resin that is capable of producing approximately 1,500 gallons of spot free water with an incoming TDS of 100 parts per million.

Simply open the box, unpack, hook up hoses and get to work.  No need for other fittings or parts.

Lightweight and very compact.

Tucker 1/2 Cubic Foot DI Tank