I like having the option of using the 5 Squared in a smaller configuration. It's a nice upgrade and works well (I haven't had a problem using the liquid flow control). It looks great on the Dicodes Danni box mini.

Despite its good looks, I find it a faff to refill because the drip tip must be removed before unscrewing the top cap, and drip tips have a habit of getting lost when they're not attached to anything. This, combined with more frequent refills due to the smaller tank size, means I have gone back to the original 5 Squared on an SBS, which achieves almost the same look.

If form is more important than function to you, you'll probably like this upgrade, but if you like a practical, no-faff setup like me, you might be better off saving your pennies.

Love this. Its like having 2 tanks. I can switch back & forth, depending on the mod I'm using. Of course, it goes without saying, the quality from Steam Tuners is as good as the tank itself.

Great way to drop the huge Kayfun 5 squared to a normal size. Opens the airflow very slightly but drops the tank size. Still a RDL for sure so don’t expect a ton more air. Only down side is the threading near the juice flow control on the tank. Takes a bit to get the tolerances correct to ensure it’s working and not unscrewing the tank.