This is Echo's Blower with a 79.9 cc engine with new fan/volute for industry-leading blowing performance. 44 N of blowing force, carbon-fiber frame and fan case for light weight. 91 mm (3.6") diameter blower pipes for maximum air flow, fan intake circulates air and cools user's back, heavy-duty backpack straps for all-day comfort. Large see-through fuel tank, patented wear ring reduces tube wear. Top-mounted tool-less filter access for easy in-field cleaning or maintenance.