1. 3 Different Rough Levels9 pedi replacement rollers contain 3 different levels to meet your callus removal needs. Extra coarse to effectively remove even the toughest skins; Rough regularly for softens and smooths the usual hard skin; Soft rough for a perfect finish and good daily maintenance.;2. Safe and EffectiveThese smooth velvet replacement rollers have a curved design and fit your feet perfectly. Long-lasting diamond crystals, micro-abrasive particles, remove hard, rough, cracked, dry and fragile skin, provide beautiful soft feet effortlessly.;3. Usage these replacement roller heads are perfect for smooth velvet pedicure and other callus marks for foot care.;4. easy to install easy to install with one click, replace the smooth velvet roller when it becomes less effective, suitable for soft, hard, dry and sensitive feet.;5. Save time and money Do you regret that your replacement rollers are more expensive than others? - now you can get a pack of 9 smooth velvet refills at a really reasonable price.