Clear more debris, quickly with up to 423 CFM and 207 Km/h / 128 mphVariable speed trigger for improved control in all applications. Speed lock provides full power control without having to hold down the trigger, reduces fatigueHigh efficiency brushless motor delivers up to 15 min run time using an 18V/54V 3/9Ah Battery)Curved tube design creates rotational control and reduces fatigueConcentrator attachment increases force for stuck debris