I had a really great experience buying my solo 2 from puffitup. However, unfortunately, this WPA is just no good. Do yourself a favor and skip it, just use the shorter black stem that comes with it, it will fit a 14mm water pipe. I think this WPA must be really low quality glass or something, it will break very easily and might damage your solo in the process. I know glass is very fragile, as evidenced by how I almost immediately dropped and chipped my longest glass stem while rinsing it before even using once lol. That was entirely user error/clumsiness. After that mishap tho I made sure to be extra careful with my remaining stems and this adapter. I didn't have a water pipe yet for the first week or two of having the solo, so I didn't even touch it during that, it was just sitting safely in a box, no dropping or bumping occurring that would have weakened it. Got my water pipe, hooked it up, it worked great! Kind of fragile-feeling connecting it to the pipe, like the connection was a little too tight and it seemed to stick, but I made sure to be gentle and not let go of the solo therefore not letting the full weight rest on the connection. Well, I used it 2 times, then stuck one of the silicone caps on the end, left it till the morning, went to remove the silicone cap and to my surprise the bowl portion just popped right off of the stem. It wasn't a crack or snap or something, I literally just pulled to get the cap off and it ripped the bowl clean off. It had a smooth clean separation. It must have been attached incorrectly and just came apart in my hands. I was really glad it didn't pop off like that while in my solo, because with how low down it came apart (right along the top of the glass screen) I don't know how I would have gotten it out of the heating chamber without intentionally shattering it first. Would have been a nightmare and easily could have caused damage to my solo. Find a different WPA or just use a short stem, it works just as well if not better because it doesn't feel like it's gonna snap or stick when removing from the pipe. It's not as tight of a connection, you just loosely hold it there through the hit, but I think the airflow helps and it's way easier in my opinion. Maybe just buy an extra spare stem or two instead, I wish I had done that. TL;DR, don't buy this adapter. It's not worth it for the price, the low quality, and the risk of damage to your vape.
So being completely inattentive, I ordered this in stead of the 18mm I needed. I figure it may come in handy down the road, so hanging on to it all the same. The biggest take away is that is was a pleasure shopping with puffitup. Good prices, fast delivery... will make a habit of shopping here first.
I prefer to use my Solo 2 inverted (with a J-hook) to eliminate the problem anything falling into the oven. This works perfectly to facilitate that. I hear it works well as a WPA too.
It works very well & fit is excellent also easy to clean.
Compared to the mouthpieces that come with the Solo2 this isn’t quite as tight a fit, making it a bit wobbly. Connects to my 14mm waterpipe great and using it gets very nice hits but it’s a bit shakey.