Medium grit #300 diamond file for knife sharpening, smoothening coarse file marks. Use wet or dry this half round file is versatile in application as one surface is flat and other is half round. Both surfaces are coated with #300 grit diamond particles.
Diamond file is well known to out last metal files and suited for metal, glass, ceramic and even stone shaping. In using diamond file, let the weight of the file do the cutting. No need to exert undue pressure as diamond particles are sharp and hard. Clean up with brass brush or under running water.
