These are the same/similar parts that came with my motorhome. And they break often, and as another review says, they have spares. I want to replace the drawer slides with ball bearing slides, but the design of my RV doesn't make this an easy task. I'm not sure which is worse trying to understand another slide or just replacing this one over and over again. The space you get into is small and it's hard to see what you're doing anyway. They perform the same job as the original hardware, but are generally poorly designed.