PROWALLS Effect Machine like 750Watts Cold Spark Machine, CO2 Jet Machine, CO2 Gun, confetti cannon for parties supplies etc. Science, Safe Indoors and Outdoors, easy Operation, Premium Atmospheric Stage Equipment Special Effect Machine are made specifically for mobile djs, nightclubs, concerts, production companies. Fireworks and Gas displays are an incredible way to entertain people. you can create spectacular indoor displays for such events as: Holiday celebrations, Parties of all types, Business launches, Weddings & Reception, Festivals