Used for adapting Couplings with different dimensions.
1 1/2” x 1”, 2” x 1”, 2” x 11/2”, 2 1/2” x 1”, 2 1/2” x 1 1/2”2 1/2” x 2”, 3” x 11/2”, 3” x 2”, 3” x 21/2”