For connecting e.g. a pipe to a quick coupling
The Brass Reducing Coupling has a male- and female thread. It serves to connect, e.g. a pipe to a quick coupling.
With 47.9 mm (G 1 1/2") male thread and 42 mm (G 1 1/4") female thread.
With 47.9 mm (G 1 1/2") male thread and 42 mm (G 1 1/4") female thread.