This coupling is used with Takahashi telescopes to reduce the thread from M72 to M55.9. The telescope side has male M72 threads and the "camera" side has male M55.9 threads. The metal back length of this coupling is 15 mm.
This coupling is used with Takahashi telescopes to reduce the thread from M72 to M55.9. The telescope side has male M72 threads and the "camera" side has male M55.9 threads. The metal back length of this coupling is 15 mm.