Dellner Couplers' automatic coupler for OSC, Australia. Dellner has supplied retractable couplers for ... In addition to couplers, we also provide semi-trailer joints, adapters, sidebuffers, hatches, ...

We've all found ourselves stuck behind a slow-moving semi-truck before, either in tight city traffic or on the highway. Every time it happens, we're left staring at the massive trailer in front of ...