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["✅Good Material: The material of the permanent magnetic chuck is iron and brass, so you don't have to worry about the permanent magnetic chuck getting deformed during transportation and they have a longer lifespan. In addition, dust does not easily accumulate on the smooth surface.", "✅High Durability: On the one hand, it is made of iron and brass, giving it strong hardness and wear resistance. On the other hand, welding and treating the brass plate can extend the corrosion of the cutting fluid.", "✅High Efficiency: This permanent magnetic chuck uses an optimized magnetic circuit design, so that almost no residual magnetism is left after processing, making it easier to remove the processed workpiece with higher efficiency.", "✅Strong Magnetic Force: This product uses high-performance magnets with strong magnetic force and less residual magnetism.", "✅High Precision: This permanent magnetic chuck is made of professional material with a parallel accuracy of 0.01 mm/0.000394 inches and a magnetic pole pitch of 1.5 + 0.5 mm/ 0.059 + 0.019 inches for high precision and remarkable processing effect. The accuracy of the disc surface also does not change when opening and closing."]