Stone File Pen is a Nail File characterised by an extremity made in pumice stone; it is specific and indispensable for the nail preparation during the first stage of Nails Extension process. By possessing an extremely fine grit, it is used with soft circular movements in order to roughen the nail surface gently removing the cuticles from nail, allowing the perfect adhesion of the gel to the surface. Characterised by a practice plastic handle, easy to disinfect.