These Scholl Velvet Smooth Replacement Rotary Heads are designed for use with the Scholl Velvet Smooth electronic foot file system, specifically targeting ultra-rough skin. Featuring Diamond Crystals, these heads offer effective exfoliation to buff away hard, dry skin from the feet, revealing smoother skin. Maintain the performance of your electronic foot file by regularly replacing the roller head for consistent and optimal results in your at-home pedicure routine.