Weight distribution replacement shank is made for heavy-duty towing. It features a 2" x 2" 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" x 2", 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" center-to-center and have a 3/4" diameter, allowing for a maximum rise of 10 1/4" and a maximum drop of 12 1/4". | Curt 2" Weight Distribution Shank, 7" Drop, 15K