... and long life Product: stress ball with magnet OUR neodymium stress ball with 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 =216 balls5, Each set has a round ...