Joint connector, made of stainless steel, material no. 1.4310, for the mechanical and electrical connection of all accessories made of conductive materials in the potential equalization. Certified! for dimensions: GKU 170-78T80 ... and their fittings Required: 2 pieces per joint must be ordered separately for dimensions: GKU 213A78T80 ... and their fittings Area of application: top in GKU 213A78T80 ... (asymmetrical) Required: 1 piece per joint must be ordered separately