the cross-section being circular, e.g. tubes, wires, needles

Full Title

Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents (polishing tools in general B24D13/00) > designed for particular workpieces > for elongated workpieces having uniform cross-section in one main direction > the cross-section being circular, e.g. tubes, wires, needles