The Cowboy Studio Hair Fan and Stream Wind machine, SF-05 is an excellent addition to any studio. This gives you the ability to create "wind" in your studio without having to brave the elements. This fan is also adjustable to create the perfect effects in your photos and videos. This blower is also a professional product, which is most suitable for shooting of dancing dress effect, stage smoke and blowing sand scenes in studio. Adjustable Speed The blower is equipped with output speed controller, benefiting you a free control on weak and strong wind.