The DSPIAE Siren Ultimate Precision Glass File is engineered with advanced nano technology and premium-grade tempered glass for superior filing performance and an unparalleled buffing capability. Its single-grain pattern ensures even filing, enabling unprecedented results that compare to a 12000 grit sanding paper. For the first time, a file can achieve a polished, mirror-like finish through buffing. Unlock the power of the next generation of buffing with the DSPIAE Siren nano polishing file.