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Orion 90 mm Tube Rings - 3.5" - 07370

SKU: ORI-07370

Orion 90mm ID Telescope Tube Rings

This pair of Orion Telescope Tube Rings allow you to securely attach a telescope optical tube to a mount or a tripod. These rings have an inside diameter (ID) of 90mm, or 3.5 inches, and are made of cast-aluminum. They feature quick-release, hinged clamp knobs and a felt lining to protect your OTA. One ring has a 1/4"-20 piggyback camera adapter, while the other has a threaded 1/4"-20 hole. For use with Orion EQ-1, EQ-2, EQ-3, or AZ-3 Telescope Mounts.