The reason I like them is because they are an exact replacement for the standard pull out rails in my RV. I have a 2004 fifth wheel and as you already know if you have an RV the drawers in it are designed in such a way that you have to lift the train to open them. This way they don't accidentally open during transport. To buy the right mounts, you'd better take off the damaged ones and order the right ones. Today, many RVs use the same manufacturers for parts and fasteners, so it's easy to order the same vents, slide rails, and other components from manufacturers that make generic RV parts. In terms of durability, expect them to last and perform just as long as the originals with no difference in the look of your drawers. I know there were times when mechanical parts were swapped out that didn't match. They match perfectly with the original holes in the back of the drawer, fit perfectly, I've ordered several pairs as extras.