Yeah, there's a piece of metal at the very end that catches the angle-iron frame it sits on. If you want to completely remove it, just lift UP at the end, then, it'll slide right out.
Before I got those ring pin lockers there, I lost the ramps 3 separate times. These damn roads around here rattled them right out. Had the windows up & radio on, so didn't hear them getting dragged for a half mile.
I was 7 miles down the road when I finally heard one fall out ... and when I went back there to slide it back in, I noticed I only had ONE ramp! Was soooo pisssed!! Had to go searching that whole 7 miles, then I find it a mile from my house.
F'in MA & their roads ....
Anyway, if I remember tomorrow I'll post some more detailed pics of it.