Excavator Boom Arm is a type of boom that can provide work in deeper or longer distances such as rivers, ponds, canals.Long Reach Booms and long reach boom design Hundreds of customers have realized the value of long reach attachments where standard booms can't do the job. Our long distance boom helps you achieve 50% more digging depth and advanced reach on a standard boom, saving you valuable cost and time and maximizing your profits.