These designs are probably the most famous and most-produced tubular steel classics. Their most important property is the sophisticated constructive form and ingenious aesthetic combination of tubular steel, wood, and cane work. The design goes back to Breuer's productive years in Berlin from 1928 until 1931 during which, after leaving the Bauhaus, he worked as an independent architect and interior designer and realised a number of grand interiors and designed numerous pieces of furniture. Thonet has been producing these models since 1930. Due to the aesthetic reduction and clarity, they are suitable for many uses: conference rooms, waiting areas, restaurants, and homes.