3-D printed adapter for Celestron RACI FinderScope or Celestron StarSense AutoAlign. 

A perfect way to fit your favorite Celestron SCT accessories from Celestron's "proprietary" bracket to the more common Vixen Synta style finder shoe.  Like the SkyRaider RiderShoe for example.

There is also a convenient peep hole for 1x rough centering on bright objects.

Made tough with thick walls and generous infill density.