• Ours are neodymium magnets strong heavy duty, which are more magnetic than ferrite magnets, big suction, there are a variety of sizes to meet your needs, support custom sizes • There is a strong magnetic force, please pay attention to safety when using ! • Multifunctional rectangular magnet?DIY PROJECTS & SCIENCE EXPERIMENT - Refrigerator Magnets, Shower Door, Work or Office, Scientific Purposes, Arts and Crafts or School Classroom • Three layer electroplating makes the appearance of magnet more durable. The size of mini rectangular magnet is 10mm long, 4mm wide, 2mm high. It is very suitable for daily use in families • Note: the bar magnets are very fragile. It is forbidden to collide with other metal objects (including other magnets), so be careful when trying to separate them