1, Excavator Arm, Excavator Boom, Long Reach Boom and Arm 2, Design and Manufacture according ... . Such as the excavator arm, excavator boom, long reach arm and boom.Not only standard excavator arm and boom ... can be manufactured, the long reach boom can be designed according to your needs. such ... as such as 14.6m long, 16.8m, 18.6m, 21.4m and so on. The long reach booms is provided ...