ADVANCED : Now we are servicing the level of Professional that means you will clean practically EVERY window with WATER FED. The core of this ability is to add RADIAL ROCKER, with 8 different SCRUBS (included but not in images - see RADIAL ROCKER for details) for all types of debris that will not come off with a nylon bristle brush. Add to this the RADIAL LITE (all bristle) and ULTRA-LITE (bristle and scrubbie) for maximum agitation on the glass - and they are practically weightless. We are also adding the 4-ANGLE GOOSENECK PACK for reaching deepest windows and overcoming all sorts of weird architecture. PIVOT LOCK is a fine small tool in case you ever want to lock the swivel function.