Galvanized swivel top bracket provides vertical and tilting adjustment for trailer bunks. Swivel Bracket for mounting Bunk Boards to Bolster Brackets. Bunk flange holes 3/8" dia. Bunk flange 1-3/8" x 3-1/2" Swivel flange hole 1/2" dia. Swivel flange 2" tall x 3-1/2" 2" bunk flange hole centers 11 gauge material.
