The sharpener combine the coarse grinding, the fine grinding & polishing. for Brilliant Results every time. Prepare, Sharpen, then Hone. Quickly and effectively keeps your kitchen knives brilliantly sharp and restores blunt knives back to their former sharpness. ease of use and razor sharp precision sharpening of all knives. More than a kitchen knife sharpener, its a pocket knife sharpener, stainless steel, hard steel, high carbon steel, Japanese steel knifesharpeners, and more. Easier and more accurate than a whetstone. Rough Grinding: Put the blade into the diamond grinding tank vertically and push back slightly for around 5 times; Fine Grinding: Put the blade into the tungsten steel tanks vertically and push back slightly for around 3 times; Polishing: Put the blade into the ceramic tank vertically and push back slightly for around 3 times. Please be noted that do not push and pull repeatedly during sharpening. Super simply operation! Put your knife in the sharpening slot, then sharpen in one direction and repeat 3-5 times. Within 3 seconds, the blade is as sharp as new.It is widely Suitable for sharpening kitchen knives,fruit knife,scissors,bread knives,chef knife. Quick, safe, and fits for right or left-handed operation with an ergonomic handleEasy to operate, safe and reliableA must have and necessity in the kitchen.