A device for the automatic labelling of cable ends comprising: a. a strip, composed of a pair of small tubes paired together and spaced apart and connected longitudinally by a connecting plate and squashed along the line of the connecting plate b. A printer for printing said strip, printing on at least one flat side of a small tube; c. A feeder for advancing and feeding the printed strip; d. A cutting unit, composed of a longitudinal cutting unit and a transverse cutting unit; e. A device for centring the tubes for holding the strip below the cutting unit, said device for centring is composed of a pair of elements, an upper and a lower centring device, being retractable to allow movement of the tubes, said device for centring having lateral shoulders for the lateral containment of the outer walls of the strip, these squashed walls are contained between the upper and lower centring device; f. The longitudinal cutting unit being for the cutting and removal of the plate connecting the tubes using a punch with a movement perpendicular to the main axis of said connecting plate; g. The transverse cutting unit being for cutting to size the tubes into labels by means of a punch with movement orthogonal to the main axis of said tubes; h. A device for enlarging the labels, composed of the tubes held crushed by the centring device, the device for enlarging consisting of a pin with terminal tip and tubular configuration, which enters axially into the section of said labels, giving them a circular cross-section, moving, and distancing the relative centring devices, retracting the upper centring device from the lower centring device; i. A group of extractors for transferring said labels from the pins to tubular elements, the extractors being equipped with a mobile transferor with a through-hole, which pushes said labels from the pins onto the tubular elements arranged on axis with said pins, to release the labels on the end of the cables; j. A connection unit for connecting the labels on the tubular elements to the terminal ends of the cables to be marked, after said end has been detected by a presence sensor within said tubular element the tubular element being pulled back into its own seat leaving said tube on said cable. a. a strip, composed of a pair of small tubes paired together and spaced apart and connected longitudinally by a connecting plate and squashed along the line of the connecting plate b. A printer for printing said strip, printing on at least one flat side of a small tube; c. A feeder for advancing and feeding the printed strip; d. A cutting unit, composed of a longitudinal cutting unit and a transverse cutting unit; e. A device for centring the tubes for holding the strip below the cutting unit, said device for centring is composed of a pair of elements, an upper and a lower centring device, being retractable to allow movement of the tubes, said device for centring having lateral shoulders for the lateral containment of the outer walls of the strip, these squashed walls are contained between the upper and lower centring device; f. The longitudinal cutting unit being for the cutting and removal of the plate connecting the tubes using a punch with a movement perpendicular to the main axis of said connecting plate; g. The transverse cutting unit being for cutting to size the tubes into labels by means of a punch with movement orthogonal to the main axis of said tubes; h. A device for enlarging the labels, composed of the tubes held crushed by the centring device, the device for enlarging consisting of a pin with terminal tip and tubular configuration, which enters axially into the section of said labels, giving them a circular cross-section, moving, and distancing the relative centring devices, retracting the upper centring device from the lower centring device; i. A group of extractors for transferring said labels from the pins to tubular elements, the extractors being equipped with a mobile transferor with a through-hole, which pushes said labels from the pins onto the tubular elements arranged on axis with said pins, to release the labels on the end of the cables; j. A connection unit for connecting the labels on the tubular elements to the terminal ends of the cables to be marked, after said end has been detected by a presence sensor within said tubular element the tubular element being pulled back into its own seat leaving said tube on said cable.