OLFA 9mm snap knife blades. The best choice of replacement blades for your OLFA SAC-1, SVR-1, and 180 knives. These snap blades, made from the finest tool steel, will easily cut cardboard, plastics, foam board, Gator Board and more. 30-degree angle that makes a difference. Made from high quality carbon tool steel, produced using OLFA's precise multi-step production process for unparalleled sharpness and superior edge retention. Long-lasting durable snap-off blade; a new sharp edge with each snap. Fits most OLFA standard-duty knives. 7 cutting edges per blade strip. Double-honed to 11 degrees. PACK OF 10.