Baader PlanetariumVariLock 46 T2 Extension Tube 29-46mm

Unlike the previous reviewer, I did the research and understood what I was getting here. I use this variable T spacer to fine tune the back focus of my astrophotography camera to get the perfect spacing and image quality. Beats having to have a bunch of small incremental spacers to assemble and fine tune. As stated before, you will need the additional adapter to connect this to a Baader Hyperion Eyepiece, as this is only the T2 spacer assembly. Once adjusted and locked, it is plenty rigid. True, that a combination of standard spacer could work, but for this item, you are paying for the convenience. Although there are no printed directions included in the package, the system is well documented on the Baader web site. That said, if you can't figure out how to assemble and adjust this, you are probably in over your head for whatever purpose you want this for.

It didn't come with the M43/T2 adapter ring so it won't connect to the Baader eyepiece, and didn't even include the Allen wrench. Why sell something that doesn't even work with your own products.

All metal device that is precision made. Thread movement is smooth.