Practical Design Our magnetic hooks for hanging have been upgraded for generations. Now we use the high grade NdFeB material, A3 steel shell as the basis. So the pulling force of the strong magetic hook is higher than other products of the same size. The maximum working temperature of neodymium magnet hooks is 176 F (80 C). Magnet hook is amazingly wonderful for their size and have innumerable uses. Data Based on Scientific Measurement Vertical Tension: 30 lbs Horizontal Tension:10 lbs 1.We used A3 high quality steel as the test floor. 2.After many measurements, we have obtained scientific and rigorous measurements by pulling the hook magnets at a uniform speed on professional equipment. Several Important Factors Affecting the Tensile Force of Magnetic Hook for Hanging 1.Only when the thickness of the tested steel reaches a certain level, the magnetic flux through its cross section would be the largest and the leakage magnetic field between the magnetic poles is the smallest, the tensile energy can reach the ideal value. 2.Only when the force is perpendicular to the contact surface can the tension reach the maximum. When the force is parallel to the contact surface, the pulling force can only reach 1/3 maximum. 3.Magnetic hooks for classroom attract only magnetizable materials such as iron, cobalt, nickel and their alloys. Magnets with hooks can not attract non-ferromagnetic plates such as aluminum, copper, wood, plastics and stainless steel. 4.The farther the magnet hooks for hanging heavy duty is from the magnetic material, the greater the leakage magnetic field and the smaller the pull force would be. Therefore, the surface paint adsorbed by magnet hooks for refridgerator is also an important factor affecting the pulling force of magnets.

• 【ATTENTION PLEASE】: If you want to use these strong magnet hooks on stainless steel refrigerators, we suggest to put a tissue or something else between the magnet hooks for fridge and the surface to protect the surface from scratching.
• 【PROFESSIONAL SERVICE】 We are a magnetic hooks supplier with professional strength. You can certainly find magnetic hooks cruise you want in my shop! If you need mass customization of magnet hooks for classroom , contact us and we can meet your needs.

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