Professional file specific for nail reconstruction with a core made of resistant and flexible plastic material. The zebra effect given to this file by special treatments facilitates and softens the filing, favoring the success of the work, significantly reducing the emission of dust during filing. The grain of 100/180 makes this file indispensable for modeling UV Gels and Acrylic materials in the definition phases of the curvature of the Reconstructed Nail and for softening and adapting the shapes of Tips and Plastic Prosthesis. The materials that make up this file make it washable with liquids and therefore sterilizable.