Check the listing for details. 10 Inch Low-Speed Water-Cooled Sharpener Home Scissors/Kitchen Knife Polisher. Condition: New, Made in China. Listed at 331.40 USD. Product name: 10-inch knife grinder Rated voltage: 220V-50Hz Rated power: 240W Grinding wheel speed: 95r/min Grinding wheel size: 250*50*12mm Net weight/gross weight: 15.3/16.6kg Package size: 390*375*360mm Grinding method: water cooled grinding Deceleration method: turbine deceleration