N53044 Easy TRACK Basic Helix R515/579.3mm Single/Double TrackA model railway layout feels most realistic when it doesnt reveal everything at once when trains appear, disappear, and return, just like the full size railway. That sense of distance, travel, and real operation is exactly what the NOCH easy TRACK Helix, Basic Helix brings to your layout. With track radii of 515 579. 3 mm and the option of single track or double track running, it provides a strong base for connecting different levels and expanding