Question:If two hoses are connected but only one person is smoking, does the other hose inlet need to be covered or is there a valve to seal an unused hose?<br> Answer:No, it auto close when not in use<br> Question:Does it come with the inner rubber pieces?<br> Answer:Hi, yes it does have the rubber pieces inside<br> Question:Can you unscrew the hose adapters from the ball?<br> Answer:yes<br> Question:Do you need to plug the second hose with your thumb in order for the first person to smoke it ?<br> Answer:Best very would be to take it out and just plug a hose in.<br> Question:Will it fit in a gstar hookah?<br> Answer:If it's a standard port yes.<br> 1-2 Hookah Hose Adaptor makes smoking fun and share with friends together.Easily to use ,no need to uncrew the air valve .AND you can purchase the hose together with the adapter.