COBRA helical stairs Germany COBRA helical stairs Germany from Benjamin Friedl COBRA helical stairs Germany Main entrance staircase in helical shape with glass railings, custom design View Website gLike COBRA helical stairs Germany Main entrance staircase in helical shape with glass railings, custom design View Website Interior Design Engineering 3D Modeling Share R 7 n Benjamin Friedl Designer Treppen und Glastreppen nach Maß Munich, Germany Follow Contact