Please note that the product shown in the image differs from the design supplied. . The picture here shows the fixed jaw as a single cast including post and ball joint. The design they currently sell consists of these three separate parts. I have provided an image for comparison. I contacted support about the issue and they were very helpful and sent a replacement the same day with no need to return the broken vise. However, the replacement has a similar wobble problem. It's not as bad as the first, but it's still a little wonky. Figured I won't try to bring it back as this one still works for what I need. I'll use it now until I find a better solution. The suction power itself is also not very good. You'll need to use some oil or water to wet the sealer to make it stick for more than about 20 seconds. I only gave this 3 stars because the support team was very responsive. I would give 2 stars for the product itself