Features:

• Set of two cast-aluminum rings with quick-release, hinged clamp knobs and felt lining
• One ring has 1/4"-20 piggyback camera adapter; the other has threaded 1/4"-20 hole
• Sold in sets of two rings. Mounting bolts and washers are included
• Use with 8" optical tube assembly

Editor Reviews:

Product Description:
These cast-aluminum rings feature quick-release, hinged clamp knobs and felt lining. They are designed for use with the Orion EQ-1, EQ-2, EQ-3, or AZ-3 mounts, and may fit some other mounts as well. 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.