From Amazon
Bosch AquaSurf 280 Patio Cleaner (Compatible with EasyAquatak 110/120, UniversalAquatak 125/130/135, AdvancedAquatak 140, AQT 33-10, AQT 33-11, AQT 35-12, AQT 37-13, AQT 40-13, AQT 42-13, AQT 45-14 X)
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