RO STINGER Stands for: RO (first name initials of the company founder), refers to the “stinging” function (such as one of a scorpion). Manufacturer of boom trucks with lifting capacities from 20,000 -70,000 lbs. Based in Waverly, Iowa. Stinger brand cranes are sold in the US When you demand a cost–effective lifting solution that’s matched to the qualified truck chassis of your choice, Terex® boom trucks are ready to serve. Whether it’s our high strength keel boom design that offers reliable service under the most demanding conditions or the convenience and time savings that our dual control console affords you, be assured that Terex is driven to deliver value in each boom truck we build. We strive to offer not only a product that lifts the load, but also your profits.