NEW Bluerock Tools Polishing Machine for Tig Plasma Arc Welds Model 40a Pipe Polisher Sander Grinder 270 Degree Wrap Ability on Pipe! BLUEROCK Tools Model 40A Pipe Sanding Machine 7" Max Pipe Size 110V, 900W, Variable Speed 900-2800 RPM Roller wheel with a grooved channel allows for both 1" and 1.5" width belt sizes