The cylinder magnets which have different dimension for two ends are cone magnets.Cone shaped magnets are usually made from neodymium magnetic material,because neodymium magnetic material is easy to machined into special shape. Neodymium cone magnets have the extreme powerful force on the top surface. The dimension of the neodymium cone magnets is D 25 x d 13 x h 10 mm , this is popular size for most of magnet distributors.
