Yep eg I have a double ended Titan Rapid Hitch that I bought over 10 years ago. The 50mm end is rated for 3.5K kgm and from memory the 70 mm at the other end was something between 4.5 and 6K kgm. It came as a 2 piece unit with a solid bar that slotted into a 50 mm square receiver and had adjustable heights in addition to turning over between the 50 and 70 mm tongue balls.

