Double Slot Swivel Bolster Bracket Assembly - 13"C.E. Smith's adjustable bracket is designed to support roller bunks. Hot dip galvanizing for years of use in the harsh marine environment. This bracket assembly uses bolster bracket-10102G and swivel bracket-10200G.Features:Bolster bracket: 12" bracket, 11 gauge material, 2-1/2" wide, slots 1/2" wide, swivel hole 1/2" dia., slots 4-3/4"Swivel bracket: 11 gauge material, bunk flange 1-3/8" x 3-1/2", bunk flange holes 3/8" dia., swivel flange 2" tall x 3-1/2", swivel flange hole 1/2" dia., hole centers 2-1/2"Overall assembly length is 13"