- Set of two cast-aluminum telescope tube rings with 298mm inside-diameter, quick-release hinged clamp knobs and felt lining
- Use these tube rings to attach an Orion 254mm f/4.7 reflector telescope optical tube assembly to a mount or dovetail mounting plate
- One tube ring has 1/4"-20 piggyback camera adapter; the other has threaded 1/4"-20 hole
- For use with 10" (254mm) f/4.7 reflector optical tube assembly. Not compatible with Orion 10" f/3.9 Newtonian Astrograph Reflector.
- Mounting bolts and washers are included