A device is described to assist electricians capture cabling dropped down through a cavity wall. The device (1) includes an open-ended first hollow cylindrical body (2). A second body (4) is a solid cylindrical tube of a diameter for a sliding fit within the first body (2). A loop of flexible tape-like metal banding (7) has both its free ends (8,9) retained within a slot (6) at an end of the second body (4). On movement of the second body (4), the banding (7) enters the cavity wall to abut the inner rear surface of the cavity, the banding (7) flexing to border a capturing area (29). A cable (23) is then passed down the cavity (22,26) until a suitable length thereof has passed through the capturing area (29). As the second body (4) is then moved away from the wall (20, 25), the cable (23) is retained by the diminishing diameter of the area (29) enabling the cable (23) to readily pass through hole (27,28) to be accessed by the user of the device.