This Undersink Icemaker and Instant Hot Connection Kit includes 1/2-inch Add-A-Stop tee valve by 1/3-inch compression and 15 ft. by 1/2-inch pex tubing. This kit provides an easy and quick installation, requiring no special tools and no soldering. Applications include filtered water systems, refrigerator ice maker, and instant hot water supply. Do not use pipe dope, glue or Teflon tape on any connections and do not over tighten.