... magnet with honest high quality and reasonable price: 1, Shape: magnet ball/neocube/buckyball 2, coating: Ni(lower price) or Gold, Silver ... , Blue, Red, Black Ni coating(higher price)3, Ball diameter=3mm,4.8mm,5mm or above 4, One set ... , superior quality and bargain choices, for more information about stress ball with magnet, pls contact me anytime~~~ ;)