Husqvarna 150BT, 50.2cc 2-Cycle 434 CFM 251 MPH Professional 2-Cycle Gas Backpack Leaf Blower X-TORQ ENGINE: The X-Torq engine design reduces harmful exhaust emissions by up to 60% and increases fuel efficiency by up to 20% HIGH AIR VOLUME AND VELOCITY: Powerful clearing performance featuring 434 CFM Air Volume and 251 MPH Air Velocity LOWVIB: Dampeners between the engine and chassis effectively reduce vibrations AUTO RETURN STOP SWITCH: Stop switch automatically resets to the ON position for easier starting CRUISE CONTROL: Variable speed throttle with cruise control can be set for easier handling