I wanted to be able to fit slide out drawers under my couch, but the distance between the legs on the chaise portion of my L shaped couch was too small. These legs use the same bolt holes as the original legs, but move the actual legs out a bit over an inch on each side.

The bolt holes are sized for a 5/16in bolt, but would also take an M8 bolt. The inset for the head of the bolt is large enough for a socket wrench to fit.