[✅ Specially designed with textured nano glass surface with large bamboo handle can file and gently smooth at the same time will not chew up your foot like other graters or electric shavers. ✅ Our glass callus remover is much more long-lasting and will not rust. Its bamboo handle provides a firm and comfortable grip. ✅ Can be use both wet and dry it will perform its’ best when soaking your feet into warm water for 5 minutes before filing your feet. "✅ The nano glass pedicure foot file is not your ordinary foot filer its a new cutting-edge nanotechnology. With a tempered laser-etched textured surface." ✅ The durable glass nanotech material of this callus remover is not only built to last but is also simple to clean.]