Abstract: A self contained power driven, adjustable tube cutting tool is disclosed. Within the main tool housing is a rotatably mounted C-shaped body having an adjustable automatic cutter feeding and retract mechanism therein, operable by the rotational movement of the body about the pipe axis. Opposing a set of pipe backup rollers is a cutting wheel attached to post slidable through the center bores of two mating cylindrical bodies all on a common longitudinal axis. The mating faces are spirally configured through a single rotational turn to create linear expansion and contraction of the bodies as one, integrally attached to a ratchet wheel, rotates while the other does not. A spring biased pawl couples the non-rotational body to the sliding post. The ratchet wheel engages a second spring biased driving pawl pivotally attached to a cylindrical sliding roller body which protrudes from the periphery of the cutting wheel body.