Röthlisberger Kollektion   Products Portrait News Contact Press Links D/E Trias Model Images Illustrations Designer Price list PDF brochure (g/f/e)   TRIAS in solid beech, with chrome nickel steel studs to hold the table top. Variants: Trias in beech natural or stained black. Table tops of glass, clear or etched, granite, mulitplex beech or blockboard finished in veneer of choice of linoleum.