Neodymium Dots are 12,300 gauss mfg. rating, small in size and weight. They are for use on small areas, only 15/32" dia. x 1/8". It is the strongest permanent life time magnet made today. Made of iron, boron and the rare earth element neodymium. Neodymium Dots are ideal for use on fingers, toes and small sized skin problems. The magnet is labeled with a green "N" on the negative pole side. Can be used with the DM Magnetic Face Mask. Note: Neodymium magnets are very strong but have a very short field penetration. Magnets may be stacked to increase the strength and field / penetration. Set of two. Made in the USA.