Scaling relation between the Bullock spin parameter (λ_projection) of the angular momentum contained in each projection against the RMS of the kSZ signal of each projection normalised to a M_vir = 10¹⁴ M_⊙ mass. Since neither of the two quantities depend on mass the relationship shown correlates the cluster spin with the kSZ effect. The fitting slopes (α) and errors are shown in the upper left part.