This is a Hill docking support bracket. It fits any 5/8 pin stand and a Hill docking bracket. This bracket makes the Hill bracket become more rigid and no play. The bracket is made out of stainless steel not alloy.

Credits; Tom Gleason, Erwin Landau.

If your Hill’s docking bracket was recently bought in 2022, this support bracket WON’T fit. Jerry Hill has redesigned new hole dimensions.