The Worx HydroShot Power Nozzle is a cordless watering and cleaning tool, and seems to be intended for many the same tasks you’d use a pressure washer for.
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Worx 20V Hydroshot Cordless Pressure washer review: : a nifty and nimble tool to deal with outdoor cleaning jobs
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WORX HydroShot 20V Cordless Portable Power Cleaner WG620 Tools only No Battery