Thinking about an upgrade? This short demo helps you evaluate the fit. Watch as we install and test the new model excavator side door lock for FR135G, FR155, FR200, and FR500GK excavators. You'll see how its thickened metal core withstands onsite impacts, the multi-layer anti-corrosion finish handles tough conditions, and the tight meshing structure eliminates door rattle during operation. We demonstrate the original-spec bolt-on replacement process and verify smooth unlocking performance for high-frequency daily use.