Joint connectors, with flat plugs 6.3 mm for the additional connection of equipotential bonding lines, connect the duct bases/fittings electrically and mechanically in one operation, can be inserted into the side parts of the cable protection ducts, the equipotential bonding is inevitably carried out during insertion. for cable protection ducts: LLK...E3 / LUK...E3 with 40 mm height and their fittings Length L (approx. dimension): 80 mm Material: stainless steel, material no. 1.4301 Required: 2 pieces per joint