Joint connectors, with flat plugs 6.3 mm for the additional connection of potential equalization lines, connect the duct bases/fittings electrically and mechanically in one operation, can be used in the side parts of the cable protection ducts, the potential equalization is automatically carried out when inserted. VDE certified! for cable protection ducts: LLK... / LUK... with 80 mm height and their fittings Length L (approx. dimension): 80 mm Material: Steel, strip galvanized according to DIN EN 10346 Required: 2 pieces per joint