Many of the older model canisters (Flamenco, Plus, White Star, Red Star, Mango Red, Solaris series) came with this style of floor brush.  Miele no longer makes this style available, but this generic brush is the correct 35mm size to fit the Miele wand.  It also has the locking mechanism to "snap" it into place. It has the most current fin (S4000 series forward) to park the brush on the back of the canister or along the side of the unit when it is vertical.