I have the Quickbite 7700 AXT stainless steel adjustable mount on a custom built 20 foot trailer. I got too tired of trying to hook up my previous trailer by myself. Back up, get out and check, determine how much to turn the wheel, how far to back up, get back in, back up more, opps, to far,, etc etc. Now I install the sight poles and back into the trailer, it automatically connects and all I have to do is insert the safety pin and store the sight poles. Couldn't be easier. I think I paid around $175 for it, but believe me, it's worth it. If I buy another trailer, I guarantee it will have a version of this coupler installed