YM1026X Materials: Rare earth， Neodymium iron boron Process: Three-layer plating Sphere diameter: 3 mm Contains 216 magnetic spheres Up to 5000Gs magnet performance Magnets can be shaped and designed in unlimited ways Great for training your imagination and creativity Also functions as necklace， bracelet or other accessories Package Details Weight: 23.54 g Size: 3*3*1.5 cm