1 pointBuilding another New SX 62 Manitex by STAMM Buying a new truck requires a lot of planning and designing with the Manufacturer. Everything is custom made to our needs. It is all photographed and documented for future service and repairs if needed. A good relationship is needed and complete trust is required Same qualities are needed for buying used equipment from a reputable company Stay with the big Named Companies and you will get satisfaction and reliability.
1 pointSteve is right it is a ABC flex system. They are out of Fort Collins, Co. https://www.abcsignproducts.com/extrusion/retro-frames
1 pointI looks like It is ABC. Looks like their keeper and tensioner.