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Sauber - Premium Hydro Stractor - This hydro stractor differs from all others in the market. There is two similar products, onde from Electrolux, efficient but small, and another one nick-named "spider" which has a base with 3 "legs" and is ugly as hell.
The drum can make 1400 RPM, this high speed is a dangerous problem. The solution was to build the half botton part out of concrete, heavy and solid as a rock.