DMT DS4F 14-Inch Diamond Steel Sharpening Rod, Fine Grit Made in: USA Category name: rods-steels Made in USA or imported Sanitary plastic handle with large guard for safety and Color coded ring for easy grit designation and easy hang-up Extra-Fine diamond to polish and refine an edge Sharpens knives faster than conventional stones with DMT's monocrystalline diamond surface No oil is needed-sharpen dry or with water Durable construction will provide years of consistent performance and reliable service