Abstract: An assembly for coupling two selectively rotatable shafts is provided. The assembly includes a first cross-member which is fixedly coupled to the first rotating shaft, and a second cross-member which is fixedly coupled to the second shaft. A third member is pivotally coupled to the first and to the second cross-member and selectively pivots about a first axis. A fourth member is pivotally coupled to the first and to the second cross-member and pivots about a second axis which is substantially perpendicular to the first axis. The third member and the fourth member cooperate to transmit torque from the first rotating shaft to the second shaft and substantially aligns the first and second longitudinal axes of symmetry of the first and second shafts while maintaining the alignment as torque is transmitted from the first rotating shaft to the second shaft.