OLFA snap off blades are the best choice of replacement blades for your OLFA snap blade utility knives. These blades are made from the finest carbon tool steel. Long lasting, durable snap-off blade-a new sharp edge with each snap. Great for cutting paper, art & craft applications, cardboard, shrink-wrap, etc. Standard-duty, snap-off blade is idea for general crafts, cutting wallpaper, shrink wrap, foam board, window film, caulking, more. This 9mm blade fits all 9mm OLFA snap blade utility knives. 13 cutting edges per blade. Pack of 10.