3 DIFFERENT LEVELS OF COARSE - 9 scholl pedi replacement rollers come in 3 different levels to meet your crust removal needs. Extra Coarse effectively removes the toughest crusts Regular Coarse softens and smoothes normal crusts Soft Coarse provides the perfect finishing touch and good daily maintenance. SAFE AND EFFECTIVE - These roller scholl velvet smooth replacement shoes are curved to fit your feet perfectly. Long-lasting diamond crystals, micro-abrasive particles, exfoliate away hard, rough, cracked, dry and callused skin for beautiful, soft feet with ease. APPLICATION - These replacement roller heads work perfectly with scholl velvet smooth pedicures and other brands of foot care callus removers. EASY INSTALLATION - Easy to install with just one touch, suitable for soft, hard, dry and sensitive feet when replacement Scholl velvet smooth rollers are not working well. SAVE TIME AND MONEY - Do you regret that your Scholl replacement rollers cost more than others? Now you can buy a pack of 9 scholl velvet smooth refills at a very reasonable price, much cheaper than the original.