Those shower heads are great, had one for a couple of years now.
99% sure the coloured balls do absolutely nothing of use but it was cheaper than most 'normal' showerheads at the likes of B&Q or similar and the improvement to the flow/spray/velocity/pressure/whateveryouwanttocallit was fantastic - stopped my other half from nagging about wanting a power shower installed.
99% sure the coloured balls do absolutely nothing of use but it was cheaper than most 'normal' showerheads at the likes of B&Q or similar and the improvement to the flow/spray/velocity/pressure/whateveryouwanttocallit was fantastic - stopped my other half from nagging about wanting a power shower installed.