The attachment for the convex cutting edge "TSPROF Lens Mini" is designed for the Blitz, Kadet and Pioneer knife sharpeners. It is simply mounted on the abrasive holder with the help of an internal mounting screw and offers a maximum offset of the grinding angle of 11.2°. The attachment ensures an even change of angles across the entire width of the chamfers. As a result of the work, a radius shape of the lens is achieved.