This LGB model is a replica of a modern catenary mast used by Swiss railroads. This system uses two wires: a catenary wire and a support wire. The catenary wire hangs from the support wire much like a highway hangs from the support cables of a suspension bridge. This authentically detailed mast features a solid aluminum post and two arms: one to hold the catenary wire and one to hold the support wire. The catenary wire is suspended 225 mm above the rails. Use the LGB 56302 Catenary Mast Base or the LGB 56303 Catenary Mast Base, (tiltable) to install.