Ultimately, you will need to buy PEX line (about $6 for 4 feet from Lowes or Mernards), a PEX line cutter (about $30 for generic brand), and I would reccomend "shark bite" type fittings...the line slips in, bites it, and does not leak. The shark bite type fittings (again, at local home improvement store) come in unions, 90 degree, T's, etc. The shark bite type are, to me, a bit expensive, maybe $5-6 per piece. You can invest in more expensive fittings and tools, but I've not seen the need. I