Worx WG518 Electric Blower/Mulcher/Vac, 12 Amp Powerful, 12 Amp, 2-speed Blower/Vac/Mulcher Metal impeller for 16:1 mulching ratio Air speed 160-250 mph and 400 cfm air volume Simple tool free assembly and one-touch Blower/Vac conversion Lightweight and easy to use