Ultra fine grit (1000) ceramic sharpening surface Brass threaded insert for stainless steel thumb screw Ergonomic plastic housing The ultimate accessory for your Lansky Sharpening System. This 1000 grit ceramic polishing hone lets you achieve a factory-style finish on an already sharpened blade.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }