A jackhammer is a powerful tool used for breaking up hard surfaces like concrete and asphalt. It operates by using a rapid hammering action, which allows it to penetrate tough materials efficiently. Jackhammers are commonly used in construction, roadwork, and demolition projects. These tools can be powered by electricity, compressed air, or gasoline. The design typically includes a handle for the operator to hold and a chisel-like bit that strikes the surface. Safety gear, such as ear protection and gloves, is essential when using a jackhammer due to the loud noise and vibrations it produces.