The Double Flex 6P-A1C double-cardanic version of the backlash-free composite disc coupling allows compensation of very high axial and parallel misalignments. The compact aluminum clamping hub design of the double cardanic version offers very low inertia and weight. The innovative design of the spring pack guarantees high torsional stiffness with long service life in continuous operation. The 6P-A1C clamping hub design enables use in applications with high requirements for misalignment compensation, low reaction loads and high torsional stiffness.