The DEWALT DCE4001 1" PEX Expander Head is designed for Cold Expansion Systems using Type A PEX pipe. They feature automatic rotating capability for even expansion. Maximize durability and corrosion resistance with chrome coating and black zinc plating. They also offer etched measurements and color coded bands for quick size identification. They are backward compatible with Milwaukee ProPEX Heads and color coded for easy size identification. (Milwaukee is a registered trademark of Milwaukee Electric Tool Corp. ProPEX is a registered trademark of Upon or Oyj.). Backed by DEWALT'S 3 year limited warranty. Includes: (1) 1" PEX Expander Head.