DUAL-EDGE SAFETY BLADES - With each blade having 2 cutting edges, you'll be able to extend the life of your blade and get two times the work out of it. When one side gets dull, simply flip the blade 180 degrees to switch to a new, fresh cutting edge. RAZOR SHARP BLADES - Our dual-sided safety blades are made from high quality Japanese stainless steel for unparalleled sharpness and superior edge retention. The long lasting precision of these blades allows you to work longer uninterrupted. CONTAINS 10 SAFETY BLADES - Each refill pack contains 10 Dual Edge Stainless Steel Safety Blades. Be prepared for your next cutting task with these ultra-sharp utility knife blades. CUTS A VARIETY OF MATERIALS - These replacement box cutter blades are great for food preparation and processing environments. They cut light and heavy duty materials like corrugate, paper, rubber, leather, shrink wrap, strapping, packaging, and more. THE OLFA STANDARD - As the original inventor of the Snap-Off Knife, OLFA has maintained a standard of cutting excellence for our quality and durability. Pairing your OLFA Safety Knife with OLFA Safety Blades will provide optimal results.