  The properties of cyclic structures (toroidal oscillators) based on classical
tripolar (colour) fields are discussed, in particular, of a cyclic structure
formed of three colour-singlets spinning around a ring-closed axis. It is shown
that the helicity and handedness of this structure can be related to the
quantum properties of the electron. The symmetry of this structure corresponds
to the complete cycle of ${2/3}\pi$-rotations of its constituents, which leads
to the exact overlapping of the paths of its three complementary coloured
constituents, making the system dynamically colourless. The gyromagnetic ratio
of this system is estimated to be g$\approx 2$, which agrees with the Land\'e
g-factor for the electron.
