Purchased this to connect OVL field flattener to my skywatcher EVOSTAR 72ed Pro using the skywatcher rotator for the skywatcher field flattener.
Connects perfectly by removing the nose piece from the flattener and can use m48 extensions if you require more backfocus.
Much cheaper option to using the skywatcher flattener and very stable. I found I was getting camera tilt using the flattener directly as there is only 2 thumbscrews to hold it in place original and when needing to rotate the flattener for framing was losing focus. This eliminates them problems.

Excellent product.

Adapter performs as intended

This is literally the only store that I found where they sell this exact piece to attach a Pegasus Falcon to the focuser tube of my Skywatcher 120ED. Perfect fit. Thanks for the speedy delivery!