NAIL TEK XL Size Pro Crystal File is designed with a pointed end. Designed for natural nails, unlike an emery board or ordinary file, this file will not shred the nail. Due to patented technology, the surface of the file seals and protects the free edge as you file and shape the nail. Prevents splitting and peeling of the natural nail. Dual-sided abrasive surface never wears out. The file can be washed, sanitized and fully sterilized.