, also known as a high-reach arm or a demolition boom, is an attachment used in wrecking operations to extend the reach and versatility of demolition equipment. It typically consists of an articulated arm that can be fitted onto a demolition machine, such as an excavator or a crane. The long reach boom enables the equipment to access high or hard-to-reach areas, making it ideal for wrecking tall buildings, bridges, chimneys, or other structures that require precise and controlled demolition.