SPIRO / QUADRO

. stairs : spiral, helical round (Spiro) or squared (Quadro)
. frame : round central pole in stainless steel or lacquered steel
. steps : glass / wood (oak, beech or other on demand) / stainless steel / lacquered steel
. railing :  glass and stainless steel / stainless steel / glass and lacquered steel / lacquered steel