Other features include two rail adjustors. The “pencil eraser” radius tip for pin-point precision adjustments. A square back for scraping and profiling. With an extremely high Rockwell hardness, the ReedGeek “Classic” now undergoes a proprietary Chromium medical-grade process to enhance corrosion-resistance and edge-retention longevity. With all of these indispensable features, the “Classic” will give its owner consistently great-playing reeds!