Round-based iron spiral stairs with steel structure.
Structure painted with micaceous iron glaze, 609.0402 finish light grey.
Helix central pole with no visible screws.
External strip with no visible screws.
Iroko solid wood tread, natural coloured finish with steel outer frame.
AIR3C banister: 2 satin-finish stainless steel rails, steel handrail, spindles with steel double plate.