This smoother produces extreme results, saving your customers valuable time and effort. The exclusive metal surface quickly and safely smoothes even the thickest, toughest calluses. The 2-in-1 Smoother features an Extreme grit on one side and a Coarse grit on the other for smoothing versatility. The easy-to-grip handle with an exclusive, marbled design allows you shape and sculpt rough, callused feet into smooth, beautiful works of art.