RV Fresh Water System PEX Tubing 1/2″ I.D. RedThe PEX Tubing is a cross-linked polyethylene tubing best suited for Recreation Vehicle water supply applications. PEX Pipe is durable, flexible and corrosion resistant. This tubing is paired well with Flair-It Fittings.Please measure carefully; the quantity you choose will reflect the amount of feet the tubing will be cut at. The tubing will be customized and cut to a continuous length. You will be notified if we are unable to cut the tubing in one continuous piece. A response will be required if this is the case. All customized merchandise is considered special order and may not be returned or exchanged once the order has been placed.