I bought for my C90 (current version), the threads are well made but the diameter of the grip section is too big for the C90. I filed a small area of this grip section to create a space for the focuser and then it works great.

Works perfectly! No thread issues and seems well made.

Great adapter and works well and can allow the mak user to use SCT accessories. Sooth, easy and great fitting. Yes its a good item.

Well made with clear and clean threads throughout. Screwed onto the back of my Maksutov without issue and I then fitted a 2” visual back. Perfect

does exactly what it says on the tin
fits on my older MAK 127 nice and snug

This adapter was easily spun onto the thread of my Skywatcher 127, making it possible to use standard SCT accessories.

Installed on a mak 127. Simply remove mak visual back to reveal thread and screw on adapter. Only 3 stars because it is overpriced. A big thank you to garnett Leary who's YouTube video inspired me to do this mod https://youtube.com/playlist?list=PLqb3E_0p4FM_ddJhplah6b9WtlQApaOui

Only screws in one turn and stops, does not seem to have the right threading for mak 127 skywatcher

Is it normal for this to only screw down half way this is my second one.

Fits my Skymax 127 perfectly, used with Astro Essentials 2" Visual Back / Eyepiece Holder for SCT Telescopes i now have 2" imaging train for both my eyepieces and camera mounts. Nicely made and finished.