Flair-It 1/2" PEXx1/2 In. FPT PEX Pipe Swivel Elbow. This versatile elbow is suitable for hot and cold water, and can be used with PEX or Polybutylene tubing. Its 90-degree angle and nominal size of 1/2 inch make it ideal for use on faucets coming through the wall. Bar coded for easy identification.