Milwaukee M12 ProPEX Expansion Tool Kit. Features an auto-rotating head providing even expansions for the most consistent installations. A compact right-angle design allows you to install tubing in tight locations with handed operation fast and easy. The expander tool's all-metal gears and an integrated metal frame deliver maximum tool durability on the job site. The quick cam mechanism delivers precise, continuous expansion for 3/8" to 1" ProPEX connections. Designed specifically for Uponor ProPEX, the cordless pipe expander tool is built to deliver you with effortless installations faster than other available tools.