DMT Diamond Honing Cones Kit DMT. This Knife Sharpener from the experts at DMT includes small medium and large sharpening cones stored in wooden storage box. Don't go outside without the DMT Diamond Honing Cones Kit Knife Sharpener. Features of DMT Diamond Honing Cones Kit Knife Sharpener: Fine Grit Includes small medium and large sharpening cones stored in wooden storage box Package Contents: DMT Diamond Honing Cones Kit DMT DMTDCKF: Diamond Honing Cones Kit