The Q&E expansion heads are precision engineered for accurate expansion of Uponor PEX-a tubing for Q&E fittings. Featuring the auto-rotation interface for MILWAUKEE cordless Q&E expansion tools, the heads are not only compatible with M12, M18 tools, but also fit most Uponor tools. Made from high strength steel, the chrome plated segments and black oxide ring combine durability and weather resistance. Colour coded rings for easy size recognition add convenience.