【5pcs Scholl Pedi replacement rollers】-- Coarse (roughness 40) black × 3, effective and rapid removal of thick stratum corneum, suitable for hard skin; medium (roughness 60) blue × 2, suitable for ordinary Hard skin. , 【Use with different roughnesses】-- Choose a suitable roller according to your foot skin condition. You can use a high-roughness roller to quickly remove hard and rough skin, and then use a small-roughness roller for detailed sanding.