These rails are well suited for commercial use (shop storage, bulk storage, commercial use collection boxes). They are well made and have reasonable tolerances. They also come in different sizes (some are hard to find). A few things to note: The screws are about 2mm longer for the 1/2" drawer sides. I found it odd, but they include screws and they are good quality. On an 18" slide, there are only three screw positions , so if you use the slide at full power you can drill another hole. A nice bonus is that the sliding gap for attaching the frame screw is slightly larger than standard, so you can use a larger head screw if needed (I had to do this as I only have two rail attachment points on the chassis). Overall good value for a guide that will perform well in commercial or industrial applications.