18mm T to T Spacer (TCD0180)

This spacer threaded on smoothly with no play, and the 18mm length let me reach perfect back focus with my reducer. Nice having a precision-machined part instead of stacking random rings.

The 18mm spacing was spot on for dialing in my back focus with the reducer. The threads on both sides are smooth and engage without any wobble. It's a simple, solid piece that solved my spacing issue.

This spacer threaded perfectly between my camera and telescope, adding exactly the 18mm of back focus I needed for my reducer. The threading is smooth and precise, no wobble at all when tightened down.