DMT Diamond Honing Cone Small DMT. This Knife Sharpener from the knife lovers at DMT is made with a fine Grit 600 mesh 8" half round cone and a large end that is 1 1/4" and tapers down to 3/4". Don't take the path less traveled without the DMT Diamond Honing Cone Knife Sharpener. Features of DMT Diamond Honing Cone Knife Sharpener: Fine Grit 600 mesh 8" half round cone Large end is 1 1/4" and tapers down to 3/4" Hang packaged Package Contents: DMT Diamond Honing Cone DMT DMTDCSFH: Diamond Honing Cone Small