PART# X449 Medium Air Driven Turbo Brush for carpet cleaning with 4 rubber wheels 11 inch WIDE by 1 1/4 inch. No electric necessary - operates from airflow passing through nozzle. Vacuum Turbine Hand Brush Turbine Powered Agitator with 4 rubber wheels. Fits Most Residential Vacuum Cleaners with 1 1/4 inch Hose.This is designed to work with all Intervac models. 9" brush width with full edge cleaning.