Who can deal with something that has always been a sharp knife here, provided he has a knife sharpener so doing. This part fits into any pocket and should be found in every fishing box. With this knife sharpener not only can sharpen knife from Victorinox. I have sharpened all my pocketknife and also the filleting knife. Ordinary knife from the cutlery, even with serrated edge can be sharpen. I am thrilled and can only recommend this knife sharpener.