Stanley 15-412 Carbide Grit Hacksaw Blade 12 Inch, Pack of 1 Tungsten carbide particles allow blade to cut on forward and reverse strokes. Makes thin straight cuts in ceramic, hardened steel, cast iron, and masonry. High Quality New!!!!!!! Tungsten carbide particles enable blade to cut on both forward and reverse strokes Makes thin straight cuts in ceramic, hardened steel, cast iron and masonry Tungsten carbide particles enable blade to cut on both forward and reverse strokes Makes thin straight cuts in ceramic, hardened steel, cast iron and masonry Fits standard hacksaw frame Limited Lifetime Warranty