Perfect fit: 4-pack of replacement rollers for Scholl Velvet Smooth (Extra Thick). High-performance rollers: Easily and quickly remove calluses, leaving feet soft and smooth. Original performance: Superior performance, comparable to original accessories. Replacement rollers: Suitable for both men and women, for painful, rough, dry, and sensitive feet. Note: Not compatible with Scholl Express Pedi. Instantly beautiful feet: Easily and quickly remove calluses without discomfort, leaving feet soft and smooth. Effectively removes calluses without scraping or cutting. The best rollers for removing calluses and creating smooth skin. These rollers are antibacterial and reduce bacteria by 99.9%. Ideal for foot care: This four-pack of extra thick rollers is designed for the Scholl Velvet Smooth Express Pedi electric foot file and the Scholl Velvet Smooth wet and dry foot file, suitable for all skin types. Note: Not compatible with Scholl Express Pedi. ------How to use: 1) Make sure the device is turned off. 2) Press the eject button on the side of the device to remove the old roller. 3) Slide the new roller into the device, ensuring it clicks into place. 4) Gently shake the device to ensure the roller is properly installed and there are no loose parts. 5) Dispose of the used roller. ------Note: For best results, we recommend replacing the roller every 10-12 uses. Regular replacement of the roller ensures that your Velvet Smooth foot scrubber removes rough, dry calluses from your feet as effectively as possible. ------Package contents: 4 replacement rollers.