These replacement blades fit most standard Kum sharpeners.  The ‘Standard 530S’ size will fit most sharpeners, excluding long point and lefty sharpeners.  The ‘Long-Point/Automatic 530A’ size will fit AS2, AS2M, AS3, 400-5L (this single hole long point sharpener) and 202-24 only.  Replacement blades come in a set of 3. Founded in 1919, Kum is the oldest producer of sharpeners in the world. They pride themselves on what sets them apart from other manufacturers – carbon-steel instead of inox steel, magnesium instead of aluminium or cast metals, and extremely high quality curved blades. Made in Germany.