Magcraft NSN0607 1/2-Inch Rare Earth Cube Magnets, 4-Count
Rare earth magnets are the strongest type of permanent magnet currently made. They are amazingly powerful for their size and have innumerable uses. These cube magnets are 0.5-Inch (12.7-mm) Long by 0.5-Inch (12.7-mm) Wide by 0.5-Inch (12.7-mm) Thick. They are magnetized through the thickness. They are composed of grade 40 neodymium iron boron magnetic material and are plated in nickel-copper-nickel for a shiny corrosion resistant finish. Their individual pull force is approximately 24-Pound. Maximum working temperature is 176-Degree Fahrenheit (80-Degree Celsius). Magnets may chip and crack if allowed to snap together.