These 45mm replacement rotary blades are made from high quality tungsten steel for durability and superior edge retention. Perfect for cutting cloth, leather, paper, vinyl, wallpaper and more! For use with Olfa's 45mm Standard, Deluxe or Quick Change Rotary Cutter (not included). This 2.5x6.25 inch package contains ten rotary blades and a plastic container for easy storage. WARNING: Cut Hazard, Sharp Blade. Contact may result in injury. Always keep blades away from fingers and body. Handle with Care. Keep out of reach of children. Imported. 1 Pack of 10 Pieces