Abstract: A combined skin or rough turning and smoothing roller tool comprising a body having a diametrical slit for a rough turning tool and an axially adjustable basket mounting smoothing rollers axially spaced from the slit. A frustoconically surfaced ring is disposed in an annular recess of the body forming a support surface for the rollers and the body is formed with a feed canal for a cooling-lubricant material. Outlet bores are provided in a space between the slit and the basket and communicate the feed canal with the surface of the body, the latter having a screw thread on an end adjacent the basket for a borehole feed tubing.