PolishingStiX turns a simple material into a professional modeling tool! Each matchbook set contains six PolishingStiX in grades 3200, 4000, 6000, 8000 and 12000. PolishingStiX is real MicroMesh laminated to a stiff pliable polystyrene backing. You can trim each stick to fit any minute detail requiring the same polished surface the rest of your build demands. The plastic backing allows you to dip PolishingStiX into water for cleaning and reuse to achieve that wet sanded sparkle finish. Perfect for removing embedded dust particles that seem to appear in that last wet coat of spray paint.