I got these because on a rare occasion we have to load a truck or tractor in the 6-7k pound range onto our aluminim trailer. The trailer was specifically reinforced at the time of manufacture to withstand 10k pounds, but the ramps were not considered in the transition. So I was using these hernia assurance steel ramps the were part of a set one would drive onto to do oil changes.. our 6k piund tractor bent those... So I ordered these. Truth be told I haven't tried them yet. But compared to the steel ones they are very maneageable weight wise, and I do look forward to trying them. The need just arises so infrequently that I thought I'd at least get this review out here to let you know the build quality is all there, and they look and feel like high quality ramps. Bonus: they can't rust!