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Orion 7370 90mm ID Telescope Tube Rings
Set of two cast aluminum telescope tube rings with quick-release hinged clamp knobs and felt lining
One tube ring has 14-20 piggyback camera adapter post the other has threaded 14-20 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
