Hookah Diffusers are handy stem attachments that many people arent aware of unless they are built into their stem. These Hookah Diffusers can be used to help reduce both the sound and vibration caused by a hookah. Hookah vibration can be intense enough at times to cause hookah coals to roll around or off of the hookah bowl making diffusers a good idea for those facing this issue, or wanting a more silent session when times call for them.