man I am so glad you people like nakhla.... this is the only brand available in my country so I'm happy to see I'm not missing much! btw i thought of the easiest simplest most adjustable way to make a diffuser!
1).square piece of aluminum foil
4).the down stem(duh)
Take the square piece of aluminum foil(1), and poke many many many many holes with the toothpick(2), put on the down stem(4) (you know how it should look), and make sure it stays there by using the rubber band!
that's it... it will fit any hookah and it will be great, still think you better get the real deal? if yes, WHY?!!