OLFA's 45mm Replacement Rotary Blades 5pk are made from high quality tungsten steel for durability and superior edge retention. Perfect for cutting cloth, leather, paper, vinyl, wallpaper and more! Cuts through 8 layers of cotton fabric at once. For use with OLFA's 45mm Standard, Deluxe or Quick Change Rotary Cutter (not included). This package contains five 45mm 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. RB45-5, 9460. Imported.