5 Occasion: Spare rollers are specially designed for the roughest and toughest calluses, Suitable for Both Men and Women. 4 Function: Pedicure replacement rollers effectively remove rough, hard, dry, cracked and callused skin from soles of your feet and heels in minutes. 3 Feature: Foot file refill has curved design and fits your feet well, washable material ensures quick and easy washing. 2 Packaged: Set of 8 x foot file rollers,fit smooth hard skin remover. 1 Material: Replacement roller heads has 2 times harder crystals abrasive particles, which are wear and tear resistant.