The lathe tool shown as figure "U" in the illustration is commonly known as a/an __________. GS-0090

Correct Answer: Option D — cutting-off tool

The cutting-off tool, or parting tool, is designed with a thin, blade-like profile to sever a workpiece from the main stock. It is fed radially into the rotating work, requiring precise alignment and rigid support to prevent binding or breakage during the final stages of the cut.