Commercial Grade Professional Precise Adjust High-end technology: vacuum cryogenic heat treatment technology, integrated molding, the molecules are compact and orderly, and the force is uniform. Brings extraordinary hardness and wear resistance to the knife, ensuring that the blade is lastingly sharp, will not rust, and is not easy to break. Health Keep Your Family Safe Made of the same high-quality stainless steel used in first-class kitchen knives. Leaves no residue, Serrated design, it has high security, sharp blade, saving effort. The shaft is made of high-quality aluminum alloy, making it lighter and more convenient to use. Precise Size Adjustment Removed The size of the slice can be adjusted by rotating the upper screw.