The weak bosons are considered as composite systems. The constituents are confined like the quarks in a rho meson. The substructure scale is estimated to be of the order of 0.5 TeV. A new isoscalar neutral weak boson must exist. Its mass should not exceed 1 TeV. Excitations of the weak bosons can be produced at the LHC. The lowest p-wave state is identified with the particle, which might have been observed at the LHC with a mass of 126 GeV. A substructure for the weak bosons implies also a substructure for the leptons and quarks, which should soon be observed at the LHC.