The QTX QTFX-B4 is a professional bubble machine that features a total of four fans with dual rotating heads that generate an exceptional amount of bubbles in a short period. This bubble machine is perfect for parties, events, theatres, as well as schools and colleges. The dual heads and four fans to generate a large number of bubbles in a short period of time. You can control the bubble machine via a wireless remote control so you can create bubbles whenever needed. A wheelbase allows for easy transportation and quick positioning so you can move the bubble machine around as you disperse the bubbles. The bubble fluid tank can hold up to 2.5L of bubble fluid and features a quick drain tap on the rear of the unit so you can quickly empty the tank. PLEASE NOTE THIS DOES NOT COME WITH BUBBLE SOLUTION. A good quality solution is needed (the solution from the Works does not work). We used this and it worked brilliantly https://www.thedjshop.co.uk/the-dj-shop-bubble-fluid-1-ltr.html