This turbine transmission system is what supplies power to the 6 spinning brushes. Wide Path models feature dual water ports on the spray bar for use in standard and Power Surge models. Popular models were F6022 that had the attachment hose attached so when you stood the handle up the tools were ready to use. 3 speed control arm is on the top right. (Included) Made in USA by original Hoover Company. No Longer available from Hoover. When sold out the price will show $00.00 8/2/24 DAA