Sphere magnets are permanent magnet balls or magnetic balls. No matter ball magnet or sphere magnet, they just tell us the same shape for a permanent magnet.
The neodymium ball magnets/neodymium sphere magnets are magnetic balls that made of rare earth neodymium permanent magnetic material.
The smallest sizes of neodymium ball magnets we made are Dia-2mm. And the biggest NdFeB sphere magnets we made is Dia-50mm. Meank magnetics will be your first choice of sphere magnets supplier and magnetic balls supplier.