Heavy-duty metal blades with precise graduations and a paint-free black finish will provide superior wear and longevity to these saw blades, which are made from high-quality metal and laser etched for superior durability and wear resistance . PROFESSIONAL PRODUCT WITH CLEAR PRECISION GRADING AND READY DEPTH MARKING: This blade features built-in depth markings so you can cut accurately and efficiently every time. As far as I know, it is made of high carbon steel, which has better resistance to deformation than other steels. This particular sawtooth model has been specifically designed to minimize the amount of dust that accumulates on its surface, thus providing maximum hygiene. It's also professional grade to ensure precise, smooth cuts. The saw teeth are sharp enough to cut even the toughest materials, suitable for long-term use. It is also resistant to corrosion ensuring its longevity. This model is also designed to reduce vibration, resulting in more accurate cuts and less fatigue. It's lightweight and easy to use, making it ideal for anyone looking for a reliable, efficient solution.