Jack Hammer is a powerful handheld tool used for breaking up hard surfaces such as concrete, asphalt, and masonry. It works by delivering a rapid succession of blows to the surface, using a pneumatic or electric mechanism. Jack hammers are commonly used in construction, demolition, and renovation projects to break up concrete slabs, remove tiles, and dig through hard surfaces. They come in different sizes and designs, depending on the job requirements and the user's preferences. Jack hammers are known for their high power and efficiency, making them an essential tool in many heavy-duty applications.