Sparkler sticks are handheld fireworks that produce bright, sparkling effects when ignited. They consist of a metal wire coated with a mixture of combustible materials, which burn slowly to create a dazzling display. Commonly used during celebrations like New Year's Eve and Independence Day, they are popular for their visual appeal and ease of use. Typically, sparkler sticks burn for about 30 seconds to a minute, allowing users to wave them around for fun and festive effects. Safety precautions are essential when using them, as they can reach high temperatures and pose fire hazards if not handled properly.