This is a great company and has some great fixes that seem so obvious but no one else does it well enough. ADM, they do it perfectly. I needed a set of rings and a mount for the Losmandy rail that would be adjustable for a 4.5″ refractor, one would say just get a clam shell clamp right? Nope, its not adjustable. I’m attaching this 4.5″ piggy back on a C11 Celestron SCT not only for astrophotography but also for outreach events so people can see the difference in aperture size in real world conditions. This is a big deal, because your affecting peoples path on how and why to spend their hard earned money, and truth in advertising is important. I’ve never seen this done at any star parties, so I created this option. and ADM made it possible, Thank you.