The Black & Decker 12 Amp LeafHog Electric Blower & Vacuum features powerful, up to 240 mph blow speed. Allows more power for removing matted leaves and blowing large piles of leaves. 385 cfm air volume for maximum vacuuming and mulching. Metal mulching impeller with 16:1 mulch ratio. Improves impeller life and reduces 16 bags of leaves to a single bag. Variable speed controls air speed around flower beds and mulched areas. Easy empty zipper-less bag design makes emptying mulched leaves easier.