  In this paper we present and analyze the simplest physically meaningful model
for stationary black diholes - a binary configuration of counter-rotating
Kerr-Newman black holes endowed with opposite electric charges - elaborated in
a physical parametrization on the basis of one of the Ernst-Manko-Ruiz
equatorially antisymmetric solutions of the Einstein-Maxwell equations. The
model saturates the Gabach-Clement inequality for interacting black holes with
struts, and in the absence of rotation it reduces to the Emparan-Teo electric
dihole solution. The physical characteristics of each dihole constituent
satisfy identically the well-known Smarr's mass formula.
