Modelones's glass foot file callus remover is crafted with innovative nano glass, featuring over 10,000 nano micro grinding particles for effective 360° dead skin removal. Features Safe & Gentle: Provides a safe exfoliation experience, ensuring no damage to your skin while delivering softer, smoother feet. Ergonomic & Convenient Design: Features an ergonomic anti-slip silicone outer shell for a comfortable grip, making it easy to use as a heel scraper for cracked heels. Professional-Grade Results: Achieve high-efficiency dead skin removal and enhanced skin smoothness with this foot care tool, ideal for both home and professional use.