They do appear to be Smitty bilt slides. I ran them for a couple years before recently selling them for $160. They are very stout and make a good step for climbing into a raised rig. The downside for me was the loss of ground clearance as the bottom bar is 6-8" below the top two. They also require you to drill and self tap mounting bolts into the frame. If I were getting a frame mount slide, I would prefer the type that clamp around the frame rails rather then the bolt on style.