@solarcleansolution: Zelv solar cleaning brush hand-hold electric cleaning tool solar panel cleaning machine X4 Solar Cleaning Brush Main Features: 1.Telescopic rod Material:Aluminum alloy Length (M):3.5M/ 5.5M/ 7.5M Number of stanzas (section):3/4/5 Diameter (MM):36/39.5/43 Wall thickness:1mm Number of stanzas (section):3/4/5 2.DC motor Total power: 300W Voltage: DC24V Rotate speed: 350r/min 3.Brush head Brush diameter:32CM Cleaning width :65CM Usage Time: Over 5 years Material:Nylon wire #solarCleanBrush #solarcleaning #pvcleaning #solar #solarpanels #solarpower #solarenergy #renewableenergy #photovoltaic #CleanRobot #solarenergy #rooftopsolarpower #farmsolar #floatingsolar #groundmountsolar #solarfarm