In developing the modular sections of our new Expedition Style Trailers, we had to come up with a weldable clamp to enable us to add and remove accessories. We have just finished all the field testing to our satification, and completed the patent pending process.We are now making these clamps available for retail sales as well as for our own use. The clamp portion goes on tube diameters from 1.25" dia. to 2.25" . The weldable saddle accepts tube 1.25" to 2.25" and a flat surface for square, rectangle, and flat bar welding. We've used them on removable roof racks, Light bars, fire ext. brackets, rear view mirrors, ect. They have been clearenced for powdercoated surfaces. Check em out @ www.bengelsoff-road.com