Universal Astro Radian 61 M63 Threaded Eyepiece Adapter

This appears to be an eyepiece adapter that Radian 61 owners could thread onto the back of their telescope.  It is M63 threaded and has a brass compression ring that is tightend using three screws around the perimeter.  

This should thread into any M63 thread and provide you with an eyepiece holder if you so desire.