A transfer unit (C) to transfer wraps containing groups of smoking articles changing the mutual distance thereof; the transfer unit (C) comprises: at least two transfer pockets , each designed to house a respective wrap ; at least one first output station (S8); one single input station (S6); an insertion device , which is configured to simultaneously insert two wraps , which are arranged at an input distance (I) from one another, into the transfer pockets , which are together in the input station (S6); an extracting device , which is configured to simultaneously extract two wraps , which are arranged at an output distance (O) from one another, which is different from the input distance (I), from the transfer pockets , which are together in the first output station (S8), so as to insert the two wraps into at least one feeding pocket of a feeding conveyor ; and a first moving device , which is configured to simultaneously move the two transfer pockets between the input station (S6) and the first output station (S8); the transfer unit (C) is characterised in that: the extracting device is configured to simultaneously insert the two wraps into two respective and different feeding pockets of the feeding conveyor ; and the first moving device is configured to simultaneously move, along a moving direction (D1), the two transfer pockets between the input station (S6) and the first output station (S8) causing the two transfer pockets to travel strokes (C1, C2) with a different length. at least two transfer pockets , each designed to house a respective wrap ; at least one first output station (S8); one single input station (S6); an insertion device , which is configured to simultaneously insert two wraps , which are arranged at an input distance (I) from one another, into the transfer pockets , which are together in the input station (S6); an extracting device , which is configured to simultaneously extract two wraps , which are arranged at an output distance (O) from one another, which is different from the input distance (I), from the transfer pockets , which are together in the first output station (S8), so as to insert the two wraps into at least one feeding pocket of a feeding conveyor ; and a first moving device , which is configured to simultaneously move the two transfer pockets between the input station (S6) and the first output station (S8); the transfer unit (C) is characterised in that: the extracting device is configured to simultaneously insert the two wraps into two respective and different feeding pockets of the feeding conveyor ; and the first moving device is configured to simultaneously move, along a moving direction (D1), the two transfer pockets between the input station (S6) and the first output station (S8) causing the two transfer pockets to travel strokes (C1, C2) with a different length. the extracting device is configured to simultaneously insert the two wraps into two respective and different feeding pockets of the feeding conveyor ; and the first moving device is configured to simultaneously move, along a moving direction (D1), the two transfer pockets between the input station (S6) and the first output station (S8) causing the two transfer pockets to travel strokes (C1, C2) with a different length. <EOS>