Feature:

This quality cast aluminum rings are custom made for use with Celestron equatorial mounts.

The inside diameter of the ring is 90mm.

The hinges open to allow easy installation of the optical tube and the locks can be loosened during use to allow tube Rotation and balancing.

In order for astrophotography lovers to capture the spectacular views of the sky, these tube rings feature a standard tripod adapter (¼"-20) on one of the rings, to provide easy piggyback camera attachment.

Packing list:

1 Pair(2pcs) Tube ring