Our ceramic plate diffusers are one of the most robust engineered products from AirOxi Tube which are extremely efficient. The ceramic plates have been designed in such a way that it is quite strong and highly durable. The thickness of these ceramic diffuser plates has been increased a bit as compared to the traditional plates. For more information visit: http://www.airoxitube.com/use-of-nano-bubble-ceramic-plate-diffusers/