Telescope Tube Mounting Ring Holder Set (90mm)

1. This cast aluminum tube ring set includes quick-release hinged clamping knobs and felt lining, allowing you to securely attach a telescope optical tube to a stand and tripod. 2. The hinges open to allow easy installation of the optical tube and the locks can be loosened during use to allow rotation and balancing of the tube. 3. So that astrophotography enthusiasts can capture the spectacular views of the, one of the two rings in the set has a 1/4"-20 piggyback camera adapter, the other has a 1/4"-20 threaded hole. 4. The piggyback camera adapter can be removed to mount an adapter plate for a guide bezel above the tube rings.