The M18 ProPEX? Expansion Tool features an auto-rotating head for convenient one-handed operation. A “D”-handle design and integrated magnesium frame offers maximum jobsite durability, while the quick cam mechanism delivers precise, continuous expansion for 3/8″ to 1-1/2″ ProPEX connections. Designed specifically for Uponor ProPEX, the M18 ProPEX Expansion tool is built to make effortless installations faster than other tools available.?