Vixen Tube Rings are top of the line and this solid one-piece construction is guaranteed to cradle your telescope optical tube safely. Just slide it through the ring and adjust the tension. These rings are not hinged.
Vixen Telescope Tube Mounting Rings are sold in pairs and have 1/4"-20 threaded holes on top and bottom. An optional Tube Ring Accessory plate can be fit across the top of the rings for additional mounting options and greater stability when place far apart. You won't be disappointed in the quality of this product!