HB-7662 Gasoline Backpack Leaf Blower combines a high powered gas leaf blower with state-of-the-art ergonomic design. Powerful Clearing Performance: 4-cycle, 76-cc, engine has a powerful blowing force (200 MPH, 660 CFM, 3.0HP). Ergonomic Features: Gas leaf blower backpack features an ergonomic harness system and an adjustable offset handle, the cushion has moderate softness and won’t tire if carried for a long time. Emission standards certified by EPA, safe and environmentally friendly. Comes with a round mouth, suitable for more scenarios.