This mast is the standard mast for Z Gauge catenary Catenary wire is clipped into place easily on this mast The base of the mast can be clipped to Z track Marklin Z Gauge High quality plastic and metal construction This mast is the standard mast for Z Gauge catenary. Catenary wire is clipped into place easily on this mast. The base of the mast can be clipped to Z track. Marklin Z Gauge. High quality plastic and metal construction.