Swivel Bracket Assembly – 8″ BracketThis Smith adjustable bracket is designed to support bunk boards. Hot dip galvanizing for years of use in the harsh marine environment.This bracket assembly uses bolster bracket-10100G and swivel bracket-10200G.Features:Bolster bracket: 8″ bracket, 11 gauge material, 2-1/2″ wide, slots 1/2″ wide, swivel hole 1/2″ dia., slots 2-3/4″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 9″