5" x 90D Elbow ith 5" to 4" x 300mm Straight Reducer – ELB-54-90D-300, 5" x 90D Elbow with 5" to 4" x 500mm Straight Reducer – ELB-54-90D-500, 6" (175mm O.D.) x 90D Elbow with 6" to 4" x 350mm Straight Reducer – ELB-64-90D-350-175, 6" (175mm O.D.) x 90D Elbow with a 6" to 5" x 200mm Straight Reducer – ELB-65-90D-200-175, 6" (175mm OD) x 90D Hopper Elbow with 6" to 4" x 350mm Welded On Reducer with Victaulic Ends with Slurry Pot – ELB-64-90D-350-175-TP, 6" (178mm O.D. Transcrete End) x 90D Elbow with a 6" to 4" x 350mm Straight Reducer – ELB-64-90D-350-178, 6" (178mm O.D. Transcrete End) x 90D Elbow with a 6" to 5"x 200mm Straight Reducer – ELB-65-90D-200-178, 6" (178mm OD) x 90D Hopper Elbow with 6" to 4" x 350mm Welded On Reducer With Victaulic Ends with Slurry Pot – ELB-64-90D-350-178-TP