The Idler wheel Series FK, FKN, FKNN is manufactured by GMN. The product has compact and durable design. The GMN freewheels has unidirectional couplings, transmitting or supporting torque in just a single direction by friction and enabling idling in the opposite direction. Lastly, the sprag type freewheel clutch ensures highest torque capacity and highest indexing precision in a reduced structured space for a large various types of operations.