A jackhammer is a powerful tool used for breaking up concrete, asphalt, and other hard surfaces. It combines a hammering action with a chisel-like bit to effectively chip away at tough materials. Jackhammers are commonly used in construction and demolition projects, making them essential for tasks like road repairs and building renovations. These tools can be powered by electricity, compressed air, or gasoline, depending on the model. Operators typically wear protective gear, such as earplugs and safety goggles, to guard against noise and flying debris. Proper training is important to ensure safe and effective use of a jackhammer.