The abrasive coating of Dr.Alex files is made of silicon carbide. The tiny crystals of this ultra-hard material have a black-blue color and sharp edges, allowing for easy and quick shaping of the nail plate. A special stearate coating provides an antistatic effect and prevents clogging of the abrasive. Dr.Alex files are easy to clean and disinfect. Designed in the popular oval shape, they ensure precise correction and shaping of the nail plate along its entire length.