With a coarse rasp blade for removal of thick, hard calluses and a fine rasp blade for after-care, smoothing and removing thinner calluses To change the rasp blade: there is an indentation in the side of the holder. Push the blade upwards from it. Press the new rasp blade back into the holder Very practical and hygienic: There is a collecting tray for skin debris underneath the rasp blade Caution: Not suitable for diabetics and people with strong tendency to bleeding