I purchased this knife, along with two others, to go with a 3.5 kilo wheel of Pecorino Fiore Sardo, also from Amazon.There are several videos online as to how to cut a solid wheel of cheese. You can't do it with akitchen knife, at least not without a lot of hassles and safety issues.Buy all three of the knives, one to score the cheese, one to wedge it, and the other to break it.This video is a great teaching tool: http://www.youtube.com/watch?v=PL6vP4eDmEQThese are heavy duty, solid blades, not like kitchen knives. When you cut a wheel of hard cheese, you need toscore the edge to tell the cheese where you want it to break, then insert a wedging blade which you leave in place,then use the knife to force it to break. Based on the videos I watched, these are the same knives used to breaka huge wheel of hard cheese in the deli's and specialty cheese shops.