Adjustable length spreader bars with single or double extension options. Stock lengths are 8 ft to 13 ft @ 23 ton capactity, 12 ft to 21 ft @ 22 ton capacity, 18 ft to 30 ft @ 66 ton capacity, and 24 ft to 42 ft @ 65 ton Capacity. Also available is our custom spreader box system. All Spreader bars come with Certifications and load chart.