2 Bolt Tube Flange/Clamp - Roll Cage Mount - Weld On - 1/4" Thick. 3/8" holes can easily be drilled to a larger size if needed. Centering hole template is laser etched 1-3/4" and is made to ease centering your tube when welding. Can be used for tubes of any size up to 1.75" in diameter. Made in the USA, laser cut, and hand finished for any imperfections. Made of 1/4" Hot rolled steel and is packaged oiled with a 1 year rust preventative. Sold as a pair. These are used when mounting a roll cage to a tub or frame and can also be used as a tube clamp when removal of a section of tubing is needed. For example a tube over the engine or a harness bar behind the seat. When bolting through a Jeep, truck, or automotive tub it is recommended to use 2 clamps and sandwich the tub in between. Great for use on a race car, hot rod, rat rod, jeep, off road buggy, rock crawler, go kart, track car, boat, metal structure, or whatever else you can think up.