Lansky Diamond Hones for use with Lansky-Sets.
4 different grits available

Fine (gold) - 600 Grit - Excellent for producing a finished edge.
Medium (orange) - 320 Grit - Excellent for keeping a fine sharp edge on hunting, fishing, kitchen and pocket knives.
Coarse (purple) - 220 Grit - For working the blade to a semi smooth edge, prior to using the medium hone.
Extra Coarse (silver) - 120 Grit - For starting a new edge on an extremely dull and deteriorated blade.