Brass threaded hexagon bush is used for adapting 1/4" male threads to 1/2" male threads.Used in conjunction with GMPC592 Brass Hexagon Bush 1/2" M x 1/4" F, and GMPC275 Manual Air Vent 1/4" BSP, to convert them to 1/2"MSupplied in singles
Brass Hexagon Bush 3/4" M x 1/2" F (pk 1)