a device for connecting shielded pair has a base holding a shield bus and two conductor buses . each bus is formed from sheet metal stock and positioned to provide a wall at right angle to the floor of the base . the buses have insulation displacement slots situated away from the floor of the base . the base and a cover cooperatively form line entrance structures which are aligned with the slots in the shield bus and resist rotating of the lines . the cover has structures which retain the conductors in place . the base has structures supporting the shield bus in proximity to the displacement slots .