For extra heavy-duty professional cutting, not just any old blade will do. That is why tradespeople choose OLFA 25mm Silver Snap Blades for their tough cutting projects. These extra heavy-duty blades are crafted from premium Japanese tool steel and expertly honed for superior sharpness and unmatched edge retention. Each blade includes seven (7) snap-off segments providing volume cutting. Each segment is deeply notched to easily snap off once the segment dull. Simple snap for a fresh, sharp edge and get back to work. These 1-inch-tall blades offer a universal fit and will work in most 25mm knives. Premium Japanese carbon steel. Seven (7) segments per blade. Fits most 25mm snap knives