ALL METAL 'CONCEALED STYLE' SHOWER HOSE WALL OUTLET:

Round style Shower Hose Wall Outlet Connection. 

It is solidly made from brass and chrome. It measures some 5.5cms long (excluding concealed part), by 3cms wide. The main body section is some 27.5mm diameter. The Chrome cover plate is some 40mm diameter. 

The 'exposed' hose connection is a standard 1/2"BSP (measures 3/4" diameter).

The threaded tail is also 1/2" BSP and is some 28mm long. 

It comes with a securing nut and washer.