This is the newest coupling we have to offer, the same physical size and footprint as the 3.5 tonne, but now with upgraded parts like the hi-tensile chromoly shaft, a 7/8″ and 1-1/4″ shank stud are included as well as a set of 9/16″ hi-tensile bolts. This now capable and ADR approved to a huge 4.5 tonne capacity! It has a standard bolt hole pattern for ease of fitment. Due to the larger diameter bolts, the nuts may have to be mounted on top, with the bolt head underneath. Fully ADR 62/02 tested and compliant. * A super low height of 125mm at its highest point. This is lowest coupling on the market. *Capable of over 90 degrees of movement on every axis. The bolt hole dimensions (centre to centre) are a standard size of 185mm x 55mm, can easily be manipulated slightly due to the holes being elongated.