Troy-Bilt TB51BP Backpack Leaf BlowerThe TB51BP gas backpack blower includes comfort features, like padded shoulder straps, a harness, and a chest strap to help evenly distribute the blower's weight while operating. Clear leaves and debris fast with air speeds up to 220 MPH and clearing power up to 600 CFM. The powerful 51cc, 2 cycle gas engine has a balanced, full crank design and a responsive trigger on the variable speed throttle to provide quick power for handling and control.