Threaded Reducing Tee

2 1/2 X 1, 2 1/2 X 2, 2 X 1/1/2, 2X1, 3 X 1, 3 X 1/2, 3 X 2 1/2, 3 X2, 4 1/2, 4 X1, 4 X2, 5 X 1/2, 5X 1