Buyers Products 8-1/4 Inch Ductile Iron Outrigger increases your flatbed trailer’s width to accommodate wide loads. It is constructed from 100-70-03 cast ductile iron. The outrigger measures 8-1/4 in. by 12-1/4 in. Brackets for holding the outrigger (sold separately) can be welded to either the flange or the web of your trailer’s beam.