It seems like I damned the J-hook with faint praise, so I'd like to reassure anyone considering it that the J-hook and the top combine into one fantastic, easy to use and enjoyable vape well worth the price. The glass is thick, the pipe is large and cools very well, the bowl is big but works with a screen-covering load, and it stands solidly like no other j-hook. The ground joint is shorter in length (19/20?) than most 18mm joints so whether you can use it with your other gear will depend on the joint length. I assume this is to keep the disc at the preferred distance from the herbs, but I've used it with taller bowls and it works fine a little further away; it's a bummer the short joint makes the j-hook less broadly useable than it could be. Out of the box, though, it really produces cool, voluminous, flavorful vapor with simple technique and I believe it could/should be a piece of basic gear for any vaporist's kit.