A CLAW hammer is a type of hammer that has a curved CLAW at one end, used for pulling nails out of wood. A sledgehammer is a large, heavy hammer with a long handle, used for driving stakes into the ground or breaking up concrete. A TILT hammer is a type of hammer with a head that can be tilted to different angles, used for shaping metal. A TRIP hammer is a type of hammer with a heavy head that is raised and then dropped onto an object, used for forging metal.