Made with high-strength steel and a solid design, this CURT WD replacement shank is made for heavy-duty towing. It features a 2 Inch x 2 Inch shank to fit any equivalent size receiver tube opening, and it offers the strength necessary for towing large RVs and travel trailers. While the receiver tube shank measures 2 Inch x 2 Inch, the vertical shank offers a universal fit to be compatible with most CURT weight distribution hitches. Holes in the vertical shank are spaced 1-1/4 Inch center-to-center and have a 3/4 Inch Diameter, allowing for a maximum rise of 5-1/2 Inch and a maximum drop of 7-1/2 Inch. To make sure this weight distribution hitch accessory has the grit to stand up to whatever the road throws at you, it comes finished in a durable black powder coat finish.