Tree Bracket AssemblySingle Post Stand BracketSingle Post Stand Bracket attached to Tree Bracket. ( NOTE: The 1/2″ square tube inserted inside the 1 3/4″ square tube with the Long 5/16″ bolt inserted through the tube, this is required for safe, proper assembly. The purpose of the small square tube is to prevent over tightening and distortion of the 1 3/4″ square tube )Double Post Stand BracketDouble Vertical Post Stand parts. ( NOTE: There is a Left and Right angle )Double Vertical Post Stand shown with Left and Right attached to 1 3/4″ square tube with padlock in place where stand bracket and tree bracket are pinned or locked together. ( NOTE: The two horizontal holes in the angles should be on top edge of square tube closest to the single hole in the square tube, the lock or pin hole is lower than the two side by side holes ) The single hole in the square tube does NOT have to be used with the double vertical post stand bracket.