3 Different Coarse Levels - 9 Pcs pedi replacement rollers contain 3 different coarse levels to meet your hard skin removal needs. Extra coarse for effectively remove even toughest hard skin; Regular coarse for softens & smooths regular hard skin; Gentle coarse for perfect finishing touch and keep good daily maintenan Safely and Effectively - These replacement rollers feature curved design and fits your feet perfectly. Long lasting diamond crystals micro-abrasive particles surface buffs away hard, rough, cracked, dry and callused skin, get soft beautiful feet effortlessly Save Time and Money - Do you regret that your replacement rollers more expensive than others? - Now you can receive a pack of 9 refill which is really reasonably priced and considerably cheaper than the original Application - This Replacement roller heads perfectly fit for most brands of foot care callus remover Easy to Install - Easy to install with just one click, replace the roller when it becomes less effective, suitable for soft, hard, dry and sensitive feet