The D-Line Coupler and End Cap Pack is designed for use with D-Line Cable Trunking of the same size. Ideal for making longer stretches of trunking for large rooms and offices, the pack will make your D-Line Trunking even more versatile. The two included end caps allow you to seal lines off for a clean finish. Pack incudes 2x Connector to join 2 lengths in a straight line on a flat surface, 2x End Cap to neatly finish open ends. Male insert shoulders are held under trunking lids to give a smooth finish.