I have Evostar 72ed latest short tube version and use this with my 72ed x0.85 Skywatcher dedicated Flattener and it works really well. No problems with flex or focus.

This fitted my Skywatcher 72ed ds pro perfectly but when fitting to my ovl field flattener was a bit of a chore, you have to remove the rounded bezel at the bottom of the ovl FF to get the correct threads but even then doesn't screw on all the way, leaving a 1mm gap of thread but when using this it didn't make any difference to my imaging session and worked very well indeed. Later after talking to flo they said it wasn't compatible with the ovl FF only the skywatcher one but as I say it does work and many others are using it.

still in 5 star. Flo team is still the best. not yet used due to rainy season

Great job FLO. Threads a bit rough on the rotator but after a few turns OK and filter thread as well . Surely they should have tested before shipping . Maybe the QC could have been a bit better.. But overall a great adaptor does what it says..

As always top service from FLO ! I've been waiting to get the SW reducer before I left a review on this. It fits the ED72 perfectly and the SW reducer fits nicely on the other end and it holds a 2" filter. Now mine arrived really stiff to turn with a horrible grinding noise but a bit of oil and perseverance got it moving smoothly and quietly. Next little gripe is the thumb screws are tiny and don't hold it that well not a big problem as some longer ones will sort this. The major problem is you can't get focus using this with the reducer and my 183MC there just isn't enough inward focus, remove the rotator and you can get perfect focus but now I don't have anything to hold the filter and I can't rotate the camera for framing.