The ProPEX® 3/4" Expansion Heads are engineered for accurate expansion of Uponor® PEX-a tubing for ProPEX® fittings. Milwaukee's auto-rotation interface for Cordless ProPEX Expansion Tools are not only compatible with M12™;;;, M1™;;;; Tools, but also fit most Uponor tools. The high strength steel, chrome plated segments, and black oxide ring combine durability with weather resistance. While color coded rings allow for easy size recognition.