Dud hookah hose connector

!!!UPDATE. I’ve had to add the message “not for sale” because some people have been printing it and selling it in their shops without even mentioning my name.!!!---------------------------------------------------------------------------------------------------------------------------
I got tired of searching for this part in the market, so I designed it myself. Note: it's not the same size as modern Kaya and Aladdin hookahs, which makes it harder to find. It’s compatible with Kaya PNX models, and the upper part (that fits inside the hookah) measures 18.6mm at the top and 15mm at the bottom. There are two files available—one with a standard hose grip and another with a larger hose grip for bigger silicone hoses.