Bought this to replace a 51mm dual push button for the Dudley Vantage concealed cistern which was fitted 12 years ago. My granddaughters had difficulty in pushing this as they were not strong enough. I fitted the Palm Push button in a few minutes as the hole size is the same. They are now able to flush the toilet.
This is a good pneumatic flush button. It's simple to fit, looks good, operates smoothly, and only needs light pressure to trigger the flush mechanism. It is however a bit expensive for what it is, like many Thomas Dudley spares.
Good. But too expensive.
Much better to a) locate, b) operate than the dual flush it replaced.
The dual flush needs to protrude more from the housing collar, as this does.