You get an Orion Prime focus adapter from Bintel ($59
https://www.bintelshop.com.au/Images/Stock/7182X.jpg ) screw the 2" silver barrel out and then screw it into the female side of the FR. Then screw the male side of the FR into your camera T adapter and attach your T adapter to your camera and away you go. Remove the 1.25" adapter that is in your focuser tube and the Orion 2" tube slips straight in.