Rare-Earth Disc Magnets, 0.125 in. Diameter x 0.03125 in. Thick, 150-Count
These disc magnets are 0.125 inch (3.2mm) diameter and 0.031 inch (0.8mm) 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. Maximum working temperature is 176 F (80 C).