The Blue Medium Grit Disc is a 2″ diameter flat steel disc coated with a heat infused tungsten carbide CG grit. The disc is designed to remove hoof material through abrasion. The blue disc is best suited for the hooves of most average size goats, sheep and pigs that are maintained on a frequent basis. 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.