These are solid brass and chrome finished pillar adapters. These deck mounted adapters are used to install shower bath mixers or bath fillers to UK baths. The adapters is then fitted onto the tap and then inserted into both the holes on your bath. When fitted to bath taps with inlets on the back that are spaced at 150mm centre to centre, these legs splay out so that the bases are some 180mm centre to centre, the UK standard for deck-mounting. It's suitable to convert any wall mounted bath taps or exposed showers to deck mounted. Nes Home Pair of Chrome Deck Mounted Bath Filler Shower Mixer Tap Legs Adapter Extension in Silver