LENOX Tools 1991607 T-Shank Carbide Grit Jig Saw Blade, 3 1/2-Inch X 3/8-Inch, 1-Pack provides users with high performance in abrasive materials and straight, clean cuts. Cuts through tough materials that resist chip-forming, including ceramics, fiberglass, brick, and more. Uniformly applied, durable carbide grit particles on a flexible blade provide fast cuts without binding.