Aluminum Oxide 6" x 3/8" Round File ORMD So the Spyderco medium is

So the Spyderco medium is comparable to what other brands call a fine

4" x 2" x 1"

The primary cutting action occurs on the edges of the raised

The synthetic material is relatively hard so it can support the blade and produce a perfect edge

200 Micron / ~80 Grit

Aluminum Oxide 6" x 3/8" Round File ORMD So the Spyderco medium isAluminum Oxide Stones Aluminum oxide stones excel at refining surfaces, offering a finer finish than silicon carbide stones. Their durability and ability to hold their shape well make them ideal for precision tasks such as sharpening, shaping, leveling, or deburring after machining. These stones are a good choice when a high quality finish and accuracy are critical. Oil Filled These Aluminum Oxide Stones are filled with oil in manufacturing, reducing