I'll be honest, I was a bit skeptical, you probably are too if you're checking out the reviews.... see... anyway don't worry, you'll have a blast with this...& then 3 more, HA! Seriously though, it seems to have good air flow for narrow tubes & with all the various ways to pack them & light them, you'll never run out of ways to get baked. Whether you whack one @ a time or all 4 together, even 2 deuces (which is my personal favorite) you will be feeling good after this purchase. Now you gotta remember, if you do less than altogether, you'll have to cover the empty holes if they're spent or a bit too much air may get through. And keep a swab &/or one of those nifty little round brushes they give you in vape pen sets handy? If you use it after each load, you'll have a much easier & enjoyable experience.