Orion 7370 90mm ID Telescope Tube Rings
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- Set of two cast aluminum telescope tube rings with quick-release, hinged clamp knobs and felt lining
- One tube ring has 1/4"-20 piggyback camera adapter post; the other has threaded 1/4"-20 socket
- Set of two telescope tube rings with mounting bolts and washers included
- Use with Orion EQ-1, EQ-2, EQ-3, or AZ-3 telescope mounts
- Inside ring diameter is 90mm
