Steel coupling, torsionally elastic and bullet-proof (fail safe)Torque transmission via elastic intermediate ringTransmits rotating power from one shaft to another while accomodating misalignment between the two shaftsElastic ring provides superb electrical insulating characteristics (e.g. prevents leaking currents)Coupling hubs finish bored and keywayed acc. to DIN 6885Coupling hubs unboredCoupling hubs pilot boredCoupling dynamically balanced according to ISO 1940 Grade: G 2.5; G 6.3