... life time, fits Film, Foil & Paper Slitting Industry razor, made of primary tungsten carbide,super sharp and long life ... & Paper SlittingSize can be customed. Double or single blade edge.Xiamen Poko Precision Die of Wolfram Steel Tool Co ... . Focus on manufacturing tungsten carbide industrial tools. Blade(plotter blade, wire stripping blade,industrial razor), water flow meter shaft, wire drawing die, ...