Assemble the right frame (A) , left frame (B) , wood top {C) and tube (E) together then use the bolt (G) through the right frame (A) , fell frame (B) , wood top (C} and flat washer (1) into nut (H) as shown as drawing and tighten with the wrench (F}. Use the boll (J) through the tube (E) into leg frame (A). Assemble the metal back holders (D3) with wood top (C) using through the flat washer (1) into the tube of wood top (C) then fastened using Allen wrench (M).