The Bau-style door handle continues the trends of the 1930s, which were influenced by Bauhaus and Art Nouveau. This door handle on a square rosette is made of zamak and has a matt black coating. The rosette has support cams, which means it stays in place better. In addition, the rosette is equipped with a spring so that the pusher springs back into its original horizontal position after use. This construction style doorknob comes in pairs and with a toilet/bathroom latch with support cams that allow you to easily open and close the toilet door.