Brass hexagonal reducing bush is a pipe fitting made of brass to adapt the connection of two threaded terminal points or accessories of different dimensions. It consists of a threaded barrel on the inner and outer part with and hexagonal flange at one end for easy tightening with a fixed or adjustable wrench. It allows for the change of measure in a reduced space. Product range with thread dimensions from 1/8" x 1/4" to 3"x 4", in brass finish on some references.