OLFA's 28mm Replacement Rotary Blades 10 pack 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 28mm Straight Handled Rotary Cutter (not included). This package contains ten 28mm 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. RB28-10, 9563. Imported.