Product Review

These cast-aluminum rings feature quick-release, hinged clamp knobs and felt lining. They are designed for use with Orion Dovetail Mounting Plates, Orion EQ-1, EQ-2, EQ-3, or AZ-3 mounts, and many other equatorial and altazimuth telescope mounts. One of the two rings in each set has a 1/4"-20 piggyback camera adapter on it, the other has a threaded 1/4"-20 hole. Sold in sets of two rings. Mounting bolts and washers are included. Inside diameter (i.d.) is 235mm/9.25". One-year limited warranty.