Quick removal of paint and rust! The open structure ensures minimal clogging. Metalworkers often need to remove paint and rust from their workpieces. We developed the PRO N377 cleaning disc to make the removal of paint and rust easier and faster. The PRO N377 cleaning disc features an open structure that prevents rust, paint dust, and chips from clogging the disc. This allows you to work more quickly and effectively. We have impregnated the disc with resin, enabling you to use it for cleaning metal as well as other materials.