You can snap, pull, mold, squeeze and construct an endless variety of shapes with the 216 pieces set. Each spherical magnet is made from a rare-earth, super-strong magnetic metal known as neodymium.
With these magnetic balls, you can create many cool shapes. You can play "darts" on your refrigerator even. Or just use them as small, but strong magnets for displaying photos or holding papers.
This set includes 216 pieces of neodymium rare earth magnets in original color . It measures a standard 5mm diameter, 5,000 gauss of magnetic power which means it's super strong, one piece of magnetic ball can hold a half-pound wrench. It lets you create unlimited shapes, with your imaginations and flexibility constructions. With the high quality nickel plating, these magnets are among the highest quality you can ever find and best of all, it does not rust!