The Torch sawzall blades come with diamond grit technology and are designed for extended life and improved performance in cast-iron and other abrasive materials. Blades feature an industrial diamond grit embedded in high-strength nickel allow braze, the blades last up to 30 times longer and cut 2 times faster than traditional carbide grit blades. The Torch blade features a durable 1' tall profile for straighter and cleaner cuts. Diamond grit blades are designed for cutting cast-iron, hard tile (grade 5), ceramic tile, plaster, masonry, brick, fiberglass, and other abrasive materials.