The Red Coarse Grit Power Rasp is a 2" diameter rounded steel disc coated with a heat infused tungsten carbide MCM raised grit. The red disc was designed to be used after trimming your animal with the 4-Tooth Chain Disc to smooth out the hoof wall and even up the sole. You"™ll find that the red disc works similarly to your hand rasp. All of our abrasive discs are designed to eliminate heat buildup on the hoof. If material build-up occurs on the disc, waste is easily removed using a small propane burner, brass metal brush and cleaning solvent.