The BISSELL 3-in-1 Stair & Upholstery Tool is a vacuum cleaner accessory designed for use with BISSELL upright and portable carpet cleaners. This tool, with a width of 3 inches, is compatible with the BISSELL model 2369 and is perfect for cleaning stairs and upholstery. The BISSELL brand ensures high quality and compatibility with your BISSELL vacuum cleaner, making it an essential addition to your home cleaning routine.