Weasleys' Wildfire Whiz-bangs (also known as Wildfired Whizz-Bangs) are enchanted fireworks created by Fred and George Weasley. They are part of the Weasleys' Wizard Wheezes range of products. They are unstoppable fireworks that are charmed to explode when struck with a Stunning Spell, and to multiply by ten when hit with a Vanishing Charm. They include shocking-pink Catherine wheels, fire-breathing dragons, sparklers that spell out profanity, rockets with long tails of silver stars and firecrackers. When any two types collide, they make new kinds such as flying silver and pink pigs. It cost nine Sickles and twenty-four Knuts.