OVERVIEW: Rainbow Aquamate 3 Carpet Shampooer for E2 Black & SRX Models AM-12 The Aquamate 3 AM12 Black is a genuine Rainbow carpet shampooer attachment designed for Rainbow E2 Black Type 12 or SRX models. Featuring a wide cleaning path and an electrically powered brush roll for deep cleaning, this refurbished unit comes with a 2.8L solution tank and a durable composite body. It connects directly to your Rainbow wand and includes a 5-year warranty.