Premium 17-Inch Diamond Knife Sharpener Steel Oval Shaft - Ultra-Fine 1600 Grit Suitable for Ceramic Knives Excellent value in a premium-quality sharpening tool with long-life diamond particle abrasive Ultra-fine 1600 grit, precise honing to razor sharpness. Suitable for fine steel & ceramic blades Oval shaft design offers superior versatility and ease-of-use over round or flat steels Thermoplastic handle with safety finger guard. Heavy-duty steel tube shaft Length overall 17 inches, shaft length 12 inches. Weight 5.3 oz