This backpack gas leaf blower offers the power you expect from a backpack leaf blower with all the comfort and convenience you desire. Premium 51cc (cubic centimeter) 2-cycle full-crank engine. Included is a comfortable, ventilated harness with padded shoulder straps and hip belt. Up to 220 mph (miles per hour) air speed and 600CFM (cubic feet per minute) air volume along with variable speed throttle with cruise control for blowing large piles of leaves and debris. Long flex tube allows operator to maneuver around and under objects.