Brushworks Glass Nail File Duo is a collection of high-quality glass nail file designed for precise shaping and gentle preservation. Made of tempered glass, it offers a smoother and more durable alternative to traditional sandpapers. Benefits: Gentle and precise: The smooth glass surface glides easily onto your nails, preventing any burrs or breakage. Durable and long-lasting: Tempered glass ensures long-lasting performance and resistance to corrosion and tearing. Hygienic and easy to clean: The non-porous surface of the glass coils prevents bacteria build-up and is easy to clean with soap and water. Safe for nails